{"title":"Technical Pressure Gauges","description":"\u003csection id=\"technical-pressure-gauges\"\u003e\n\u003ch1 style=\"font-size: 22px\"\u003eTechnical Pressure Gauges — SPGs Built for Mixed Gas and Overhead\u003c\/h1\u003e\n\n\u003cp\u003eA submersible pressure gauge does one job, and the entire design question is how reliably it does that job when conditions are hostile. Technical diving is where that question gets real: high-percentage oxygen mixes that demand cleaned components, overhead environments where a protruding gauge is a snag hazard, sidemount and stage configurations that need specific hose lengths, and dives long enough that a mechanism drifting out of calibration is a genuine problem rather than an inconvenience.\u003c\/p\u003e\n\n\u003cp\u003eThe gauges here are built to that standard — brass and copper Bourdon tube mechanisms, oxygen-clean construction, luminescent dials readable in zero ambient light, and housings designed to survive contact with rock and wreck steel. At DiveCatalog.com, we carry these as an authorized dealer for every brand represented.\u003c\/p\u003e\n\n\u003ch2 style=\"font-size: 20px\"\u003eThe Technical Pressure Gauge Range\u003c\/h2\u003e\n\n\u003ch3 style=\"font-size: 17px\"\u003eMares SPG52 — Boot-Free Technical Standard\u003c\/h3\u003e\n\u003cp\u003eDouble welding is the defining feature: it allows the SPG52 to be used without a protective cover, eliminating the bulk and silt-trapping gap a rubber boot introduces. The copper Bourdon tube mechanism holds calibration even after significant shocks — the kind a gauge takes being clipped, dragged, and knocked against a wreck over hundreds of dives. Oxygen-clean compatible for high-percentage mixes.\u003c\/p\u003e\n\u003cp\u003eTwo hose lengths, and the distinction matters: the \u003cstrong\u003e15cm version\u003c\/strong\u003e is built for sidemount configurations and stage bottles, keeping the gauge tight against the cylinder where it can't trail into a hazard. The \u003cstrong\u003e56cm version\u003c\/strong\u003e serves as the main instrument in a standard backmount technical configuration.\u003c\/p\u003e\n\n\u003ch3 style=\"font-size: 17px\"\u003eHollis Pressure Gauge Modules\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eLow Profile Module\u003c\/strong\u003e is the streamlining option — a super-hard PVD-coated brass housing over a Bourdon tube mechanism, with a scratch-resistant lens, high-contrast dial, and luminescent needle for fast reads in variable light. Ships without a boot and includes standard Air Spool and Viton O-rings. Oxygen clean for mixed gas use. Reads 0–5000 PSI (0–400 BAR) on a 1.5″ (38.1mm) dial.\u003c\/p\u003e\n\u003cp\u003eThe standard \u003cstrong\u003ePressure Gauge Module\u003c\/strong\u003e uses a larger 2-inch brass SPG core with a luminescent face plate and chrome-plated brass housing built for marine exposure, also rated 0–5000 PSI — the choice when dial size and readability matter more than absolute minimum profile.\u003c\/p\u003e\n\n\u003ch3 style=\"font-size: 17px\"\u003eZeagle Single Gauge\u003c\/h3\u003e\n\u003cp\u003eA rugged one-piece brass body rated to 5000 psi, using a copper beryllium spiral-wound ring and Bourdon tube design for measurement accuracy. The custom Zeagle dial is large and luminescent, readable in genuinely dim conditions, in a low ergonomic housing. Two integrated attachment points at the top allow multiple rigging configurations. Supplied with an 11″ black rubber hose. Rated for operating temperatures from 40°C to −5°C (104°F to 23°F), available in imperial and metric scales.\u003c\/p\u003e\n\n\u003ch3 style=\"font-size: 17px\"\u003eSherwood 2″ Brass Pressure Gauge\u003c\/h3\u003e\n\u003cp\u003eA dual-scale 5000psi\/350BAR gauge with a 2″ diameter dial, supplied complete with gauge, boot, and hose — a straightforward, dependable pressure solution for divers who want a full assembly rather than sourcing components.\u003c\/p\u003e\n\n\u003ch3 style=\"font-size: 17px\"\u003eHollis Large Pony Compact Bottle Gauge\u003c\/h3\u003e\n\u003cp\u003ePurpose-sized for redundant and stage cylinders. Connects directly to the 7\/16″ high-pressure port of a pony bottle regulator or alternate tank regulator, showing pressure on a compact, easy-to-read display without adding a full-size instrument and hose to a bottle that only needs occasional monitoring.\u003c\/p\u003e\n\n\u003ch3 style=\"font-size: 17px\"\u003eScubapro Pressure Gauge Capsules\u003c\/h3\u003e\n\u003cp\u003eThe gauge mechanisms themselves, for building or rebuilding console assemblies. The \u003cstrong\u003eDual Metric\/Imperial\u003c\/strong\u003e capsule reads both scales for compatibility across measurement systems. The \u003cstrong\u003eImperial\u003c\/strong\u003e capsule uses a 0° orientation with a scale to 6000 psi, housed in a plastic case and mounted in a standard shock-proof boot.\u003c\/p\u003e\n\n\u003ch2 style=\"font-size: 20px\"\u003eKey Features to Consider\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOxygen clean certification:\u003c\/strong\u003e Non-negotiable for decompression mixes and any gas above standard nitrox percentages. Hydrocarbon residue in an oxygen-rich pressurized environment is an ignition risk.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBourdon tube material:\u003c\/strong\u003e Copper and brass mechanisms hold calibration through impact and temperature swings better than alternatives — the reason they remain the technical standard.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHose length:\u003c\/strong\u003e Match to configuration. 11–15cm for sidemount and stages; ~56cm for backmount primary routing under the left arm.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBoot or boot-free:\u003c\/strong\u003e Boots add impact protection but also bulk and a silt-trapping gap. Double-welded gauges are designed to run without one.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDial size vs. profile:\u003c\/strong\u003e A 2″ dial reads faster; a 1.5″ low-profile module snags less in overhead environments. Pick based on where you dive.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLuminescence:\u003c\/strong\u003e A luminescent dial or floating needle charges under torch light and stays readable when your primary light is pointed elsewhere.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePressure rating:\u003c\/strong\u003e 5000 psi covers most cylinders; verify against your fill pressure, particularly with high-pressure steel tanks.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2 style=\"font-size: 20px\"\u003eChoosing Your Pressure Gauge\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eConfiguration\u003c\/th\u003e\n\u003cth\u003eRecommended Gauge\u003c\/th\u003e\n\u003cth\u003eKey Reason\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSidemount and stage bottles\u003c\/td\u003e\n\u003ctd\u003eMares SPG52 15cm\u003c\/td\u003e\n\u003ctd\u003eShort hose keeps the gauge clipped tight; oxygen clean; boot-free\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackmount technical primary\u003c\/td\u003e\n\u003ctd\u003eMares SPG52 56cm\u003c\/td\u003e\n\u003ctd\u003eCorrect routing length; copper Bourdon holds calibration after impact\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCave, wreck, and overhead diving\u003c\/td\u003e\n\u003ctd\u003eHollis Low Profile Module\u003c\/td\u003e\n\u003ctd\u003eMinimal snag profile; PVD-coated brass; O2 clean; 1.5″ dial\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum dial readability\u003c\/td\u003e\n\u003ctd\u003eHollis 2″ Module or Zeagle Single Gauge\u003c\/td\u003e\n\u003ctd\u003eLarger luminescent dials for faster reads in low visibility\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePony and redundant cylinders\u003c\/td\u003e\n\u003ctd\u003eHollis Large Pony Gauge\u003c\/td\u003e\n\u003ctd\u003eDirect 7\/16″ HP port connection; minimal added bulk\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eComplete ready-to-use assembly\u003c\/td\u003e\n\u003ctd\u003eSherwood 2″ Brass Gauge\u003c\/td\u003e\n\u003ctd\u003eShips with gauge, boot, and hose; dual scale\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConsole builds and rebuilds\u003c\/td\u003e\n\u003ctd\u003eScubapro Gauge Capsules\u003c\/td\u003e\n\u003ctd\u003eDual, metric, or imperial scale mechanisms for custom assemblies\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2 style=\"font-size: 20px\"\u003eMaintenance \u0026amp; Care\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eDepressurize the system fully before disconnecting a gauge from any hose — never crack a fitting under pressure.\u003c\/li\u003e\n\u003cli\u003eRinse in fresh water after every saltwater dive, working water into the swivel and spool connection.\u003c\/li\u003e\n\u003cli\u003eVerify the needle returns fully to zero when depressurized; an off-zero rest position means the mechanism needs service.\u003c\/li\u003e\n\u003cli\u003eInspect the lens for cracks and the hose for bulges, cuts, or corrosion at the crimp before every dive.\u003c\/li\u003e\n\u003cli\u003eReplace spool O-rings at service intervals; a weeping HP spool is a slow leak that gets worse.\u003c\/li\u003e\n\u003cli\u003eKeep oxygen-clean gauges segregated from standard lubricants and greases to preserve their certification.\u003c\/li\u003e\n\u003cli\u003eAvoid tight hose coiling in storage, which stresses the crimp over time.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2 style=\"font-size: 20px\"\u003eWhy Buy Technical Pressure Gauges from DiveCatalog.com?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAuthorized dealer\u003c\/strong\u003e for Mares, Hollis, Scubapro, Sherwood, and Zeagle — genuine products, full manufacturer warranty\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOxygen-clean options in stock\u003c\/strong\u003e — for decompression and high-percentage mixed gas diving\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExpert advice\u003c\/strong\u003e — our team can help you match gauge and hose length to sidemount, stage, or doubles configurations\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast shipping\u003c\/strong\u003e — in-stock items ship within one business day\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRewards program\u003c\/strong\u003e — earn points on every purchase\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2 style=\"font-size: 20px\"\u003eFrequently Asked Questions\u003c\/h2\u003e\n\n\u003ch3 style=\"font-size: 17px\"\u003eWhat makes a pressure gauge “technical” rather than recreational?\u003c\/h3\u003e\n\u003cp\u003eThree things in practice: oxygen-clean construction for high-percentage mixes, a mechanism robust enough to hold calibration through hard use, and configuration options — particularly short hoses and low-profile housings — suited to sidemount, stage bottles, and overhead environments. A recreational SPG on a long hose works fine on a single backmount cylinder in open water and becomes a liability in a cave.\u003c\/p\u003e\n\n\u003ch3 style=\"font-size: 17px\"\u003eWhy would I run a boot-free gauge?\u003c\/h3\u003e\n\u003cp\u003eBoots add impact protection, but they also add bulk and create a gap that traps silt, sand, and salt against the housing. Gauges built with double welding, like the Mares SPG52, are engineered to survive without one — giving a cleaner, lower-profile instrument with one less component to maintain.\u003c\/p\u003e\n\n\u003ch3 style=\"font-size: 17px\"\u003eDo I need a separate gauge for each cylinder in sidemount?\u003c\/h3\u003e\n\u003cp\u003eYes. Each cylinder in a sidemount configuration has its own regulator and needs its own pressure gauge, since you're managing and switching between two independent gas supplies. Short 11–15cm hoses are standard so each gauge sits tight against its own bottle.\u003c\/p\u003e\n\n\u003ch3 style=\"font-size: 17px\"\u003eWhat pressure rating do I need?\u003c\/h3\u003e\n\u003cp\u003e5000 psi covers the large majority of cylinders in service, including standard high-pressure steel tanks. Check your gauge's rating against the working pressure of the cylinders you actually fill — a gauge rated below your fill pressure is both inaccurate at the top of its range and a safety concern.\u003c\/p\u003e\n\n\u003ch3 style=\"font-size: 17px\"\u003eCan I add a pressure gauge to my pony bottle?\u003c\/h3\u003e\n\u003cp\u003eYes — the Hollis Large Pony Compact Bottle Gauge connects directly to the 7\/16″ high-pressure port on a pony bottle or alternate tank regulator. It's sized specifically so you're not adding a full-length hose and full-size instrument to a cylinder that only needs periodic checking.\u003c\/p\u003e\n\n\u003ch3 style=\"font-size: 17px\"\u003eHow do I know if my gauge needs servicing?\u003c\/h3\u003e\n\u003cp\u003eThe clearest indicator is a needle that doesn't return fully to zero when the system is depressurized. Also watch for a sticking or jumping needle, moisture or fogging behind the lens, and any weeping at the spool connection. Have gauges serviced alongside your regulators at manufacturer-recommended intervals.\u003c\/p\u003e\n\n\u003cp\u003eBrowse the full technical pressure gauge collection above, or see all \u003ca href=\"\/collections\/gauges\"\u003eTechnical Gauges\u003c\/a\u003e including depth instruments. Reach out if you'd like help speccing gauges and hose lengths for your configuration.\u003c\/p\u003e\n\u003c\/section\u003e","products":[{"product_id":"scubapro-scuba-diving-pressure-gauge-capsule-imperial-1","title":"Scubapro Scuba Diving Pressure Gauge Capsule - Imperial","description":"\u003cp\u003eThe Scubapro Scuba Diving Pressure Gauge Capsule presents a traditional pressure gauge housed in a plastic case and mounted in a standard shock-proof boot. With a 0° orientation and an imperial scale reading up to 6000 psi, it is designed for scuba and diving applications and reliable underwater pressure measurement as part of your gear setup.\u003c\/p\u003e\u003cp\u003eBuilt for durability in demanding environments, this gauge supports straightforward readings during field use, maintenance checks, and routine dives. Its compact, rugged construction protects the display and ensures compatibility with standard diving rigs, making it a practical addition to scuba gear and underwater monitoring routines.\u003c\/p\u003e","brand":"Scubapro","offers":[{"title":"Default Title","offer_id":32147631308896,"sku":"05.011.022","price":139.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0065\/3810\/0851\/products\/scubapro-scuba-diving-pressure-gauge-capsule-imperial.jpg?v=1742496822"},{"product_id":"scubapro-scuba-diving-pressure-gauge-capsule-dual-metric-imperial-scubapro","title":"Scubapro Pressure Gauge Capsule Dual - Metric\/Imperial","description":"\u003cp\u003eScubaPro presents the Pressure Gauge Capsule Dual - Metric\/Imperial. This versatile gauge offers both metric and imperial readings, ensuring compatibility with different measurement systems. A reliable solution for precise pressure monitoring during dives.\u003c\/p\u003e","brand":"Scubapro","offers":[{"title":"Default Title","offer_id":32147666337888,"sku":"05.022.032","price":149.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0065\/3810\/0851\/products\/scubapro-pressure-gauge-capsule-dual-metricimperial.jpg?v=1662677580"},{"product_id":"mares-instrument-spg52-gauge","title":"Mares Instrument SPG52 Gauge","description":"\u003cp\u003eThe SPG52 pressure gauge - 56cm hose., with features making it a premium item for technical diving. The double welding allows it to be used by technical divers without protective cover. Its copper bourdon tube mechanism allows it to never lose its calibration even in case of big shocks. It is supplied with a 56 cm hose to be used as the main tool in the technical configuration. Its compatible oxygen cleaning allows technical divers to use it even with mixtures with high percentages of oxygen.\u003c\/p\u003e","brand":"Mares","offers":[{"title":"PSI","offer_id":37521721753800,"sku":"414600PSI","price":149.95,"currency_code":"USD","in_stock":true},{"title":"BAR","offer_id":37521721786568,"sku":"414600BAR","price":149.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0065\/3810\/0851\/products\/mares-instrument-spg52-gauge.jpg?v=1743745856"},{"product_id":"mares-instrument-spg52-15cm-miflex","title":"Mares Instrument SPG52 - 15CM Miflex","description":"\u003cp\u003eThe SPG52 pressure gauge - 15cm hose., is fitted with features making it a premium item for technical diving. The double welding allows it to be used by technical divers without protective cover. Its copper bourdon tube mechanism allows it to never lose its calibration even in case of big shocks. It is supplied with a 15 cm hose to be used in sidemount configuration and in stages for technical diving.\u003c\/p\u003e","brand":"Mares","offers":[{"title":"PSI","offer_id":37521722147016,"sku":"414601PSI","price":159.95,"currency_code":"USD","in_stock":false},{"title":"BAR","offer_id":37521722179784,"sku":"414601BAR","price":159.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0065\/3810\/0851\/products\/mares-instrument-spg52-15cm-miflex-psi.jpg?v=1662681415"},{"product_id":"hollis-large-pony-compact-bottle-gauge","title":"Hollis Large Pony Compact Bottle Gauge","description":"\u003cp\u003eThe Pony Bottle Gauge is a tiny gauge that easily connects to the 7\/16\" high-pressure port of your pony bottle regulator or other alternate tank regulator to show pressure in an easy-to-read display\u003c\/p\u003e","brand":"Hollis","offers":[{"title":"PSI","offer_id":40329733275848,"sku":"204.2317","price":47.95,"currency_code":"USD","in_stock":true},{"title":"BAR","offer_id":40329733308616,"sku":"204.2318","price":47.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0065\/3810\/0851\/products\/hollis-large-pony-compact-bottle-gauge-psi.jpg?v=1743747276"},{"product_id":"hollis-low-profile-pressure-gauge-module-metal-wo-boot","title":"Hollis Low Profile Pressure Gauge Module Metal w\/o Boot","description":"\u003cp\u003eThe Hollis Low Profile Pressure Gauge Module Metal w\/o Boot is a compact scuba gauge designed for streamlined diving rigs. This low-profile SPG features a scratch-resistant lens, a high-contrast dial, and a luminescent needle for quick readings in variable lighting, making it a practical addition to your scuba gear and diving setup.\u003c\/p\u003e\u003cp\u003eBuilt for durable performance, the metal housing uses a super hard PVD coating on brass with a Bourdon tube, ensuring reliability in demanding diving conditions. The module ships without a boot and includes standard Air Spool and Viton O-rings and is oxygen-clean for use with mixed gases. Readouts cover 0-5000 PSI (0-400 BAR) with a 1.5\" (38.1 mm) dial for easy visibility in dim or bright environments.\u003c\/p\u003e","brand":"Hollis","offers":[{"title":"PSI","offer_id":40329737928904,"sku":"204.2308.07","price":94.95,"currency_code":"USD","in_stock":true},{"title":"BAR","offer_id":40329737961672,"sku":"204.2309.07","price":94.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0065\/3810\/0851\/products\/hollis-low-profile-pressure-gauge-module-metal-wo-boot-psi.jpg?v=1743747280"},{"product_id":"hollis-pressure-gauge-module-metal-wo-boot","title":"Hollis Pressure Gauge Module Metal w\/o Boot","description":"\u003cp\u003eThe Hollis Pressure Gauge Module Metal w\/o Boot is a compact pressure gauge module for scuba diving gear. Its 2-inch brass SPG core features a luminescent face plate for easy reading in low-light conditions and a chrome-plated brass housing built to withstand marine environments. With an operating range of 0 to 5000 PSI, it provides reliable pressure readings for diving and scuba applications.\u003c\/p\u003e \u003cp\u003eDesigned for divers seeking a durable, easy-to-read gauge as part of their diving gear setup, this module emphasizes practicality and on-gauge readability in challenging underwater conditions.\u003c\/p\u003e","brand":"Hollis","offers":[{"title":"PSI","offer_id":40329781936328,"sku":"204.2310","price":127.95,"currency_code":"USD","in_stock":true},{"title":"BAR","offer_id":40329781969096,"sku":"204.2311","price":127.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0065\/3810\/0851\/products\/hollis-pressure-gauge-module-metal-wo-boot.jpg?v=1662683368"},{"product_id":"zeagle-single-gauge-5000psi-11-hose-w-black-hose","title":"Zeagle Single Gauge - 5000psi 11” hose w\/ Black Hose","description":"\u003cp\u003eThe Zeagle Single Gauge with an 11\" hose is designed for scuba and diving gear setups. It features a rugged, one-piece brass body rated to 5000 psi, delivering durability in harsh marine environments. The large, luminescent dial is easy to read in low light, and the ergonomic housing offers a low, compact profile for comfortable use during dives.\u003c\/p\u003e \u003cp\u003eThe gauge comes with a black rubber hose for flexible mounting and clear gauge reading. Two integrated attachment points at the top allow multiple configuration options for scuba gear setups, while a copper beryllium spiral-wound ring and Bourdon tube design provide reliability and measurement accuracy. The dial is custom Zeagle, large and readable even under dim conditions. Operating temperature ranges from 40°C to -5°C (104°F to 23°F), and the gauge is available in both imperial and metric scales to suit user preference.\u003c\/p\u003e","brand":"Zeagle","offers":[{"title":"Imperial","offer_id":42444423102685,"sku":"372-9411","price":169.95,"currency_code":"USD","in_stock":true},{"title":"Metric","offer_id":42444423135453,"sku":"372-9411M","price":169.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0065\/3810\/0851\/products\/open-box-zeagle-single-gauge-5000psi-11-hose-w-black-hose.jpg?v=1743772292"},{"product_id":"sherwood-2-brass-pressure-gauge-hose-boot-gauges","title":"Sherwood 2\" Brass Pressure Gauge Hose \u0026 Boot Gauges","description":"Pressure Gauge Console. Dual Scale DG. 5000psi\/350BAR Pressure Gauge. 2” diameter. 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