Scubapro Hydros Knife & Accessory Plate BCD Accessory
In stock — ships from Irvine, CA
This item is currently on backorder. Order now to reserve yours, and we will ship it as soon as it is back in stock.
Scubapro Hydros Knife & Accessory Plate BCD Accessory is backordered and will ship as soon as it is back in stock.
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Product Information
The SCUBAPRO HYDROS PRO Dive Knife & Accessory Plate is a black mounting plate that attaches a BCD knife directly to the HYDROS PRO buoyancy compensator using the BCD's multi-mount matrix points. It ships with the plate, washers and two stainless steel screws, measures 4.53 in long and weighs just 0.04 lb, so a knife rides in a fixed, known position instead of clipped loose to a D-ring.
Who it is for
This plate is for recreational divers who own a HYDROS PRO BCD and want their cutting tool mounted on the jacket itself, within quick reach for underwater tasks such as freeing a line or trimming entanglement. It suits divers who prefer a repeatable gear configuration: because the plate bolts to the multi-mount matrix, the knife sits in the same spot dive after dive, which matters for muscle memory and for buddy checks.
Key details
- Mounts to the multi-mount matrix points on the HYDROS PRO BCD
- Two stainless steel screws plus washers secure the plate
- Dimensions: 4.53 in long, 0.98 in wide, 0.79 in high
- Product weight: 0.04 lb
- Black; item number 21.746.001, UPC 4048336355254
- Classified by SCUBAPRO for recreational activity
Compatibility and sizing
SCUBAPRO publishes compatibility with the HYDROS PRO BCD. A dive knife is not included; the kit contains the mounting plate, washers and two stainless steel screws. If you are unsure which generation of HYDROS PRO you own, we can check it with you.
What's in the box
- Mounting plate
- Washers
- Two stainless steel screws
DiveCatalog.com is an authorized Scubapro dealer and a real dive shop in Irvine, California since 2003. Call 888-701-4017 or start a chat if you want us to confirm fit with your HYDROS PRO or your knife sheath before you order.
- Dedicated knife mount Secures a BCD knife to the HYDROS PRO for quick, repeatable access underwater.
- Multi-mount matrix attachment Attaches to the multi-mount matrix points built into the HYDROS PRO BCD.
- Complete hardware kit Includes the mounting plate, washers and two stainless steel screws.
- Stainless steel fasteners Corrosion-resistant stainless steel screws hold the plate in place.
- Low profile Measures 4.53 in long, 0.98 in wide and 0.79 in high.
- Negligible added weight Product weight of just 0.04 lb.
- HYDROS PRO compatible Designed specifically for the SCUBAPRO HYDROS PRO BCD.
- Recreational use Listed by SCUBAPRO under recreational diving activity.
- Black finish Sold in black.
- Trackable part number Item number 21.746.001, UPC 4048336355254.
| Product Name | HYDROS PRO Dive Knife & Accessory Plate |
| Brand | Scubapro |
| Item Number | 21.746.001 |
| UPC | 4048336355254 |
| Color | Black |
| Marketing Product Type - Accessories | BCDs |
| Activity | Recreational |
| Product Length | 4.53 in |
| Product Width | 0.98 in |
| Product Height | 0.79 in |
| Product Weight | 0.04 lb |
| Hardware | Two stainless steel screws, washers |
| Mounting | BCD multi-mount matrix points |
| Compatibility | HYDROS PRO BCD |
- Mounting plate
- Washers
- Two stainless steel screws
⚠️ WARNING: This product contains chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.
Frequently Asked Questions
What comes with the HYDROS PRO Dive Knife & Accessory Plate?
The kit includes the mounting plate, washers and two stainless steel screws. A dive knife is not included; you supply the knife. The stainless steel hardware is what fastens the plate to the multi-mount matrix points on the HYDROS PRO BCD, and the complete assembly adds only 0.04 lb to your rig.
Which BCD does this accessory plate fit?
SCUBAPRO publishes compatibility with the HYDROS PRO BCD. The plate attaches to the multi-mount matrix points on the HYDROS PRO BCD using the included screws and washers. If you are not certain which HYDROS PRO generation you own, call DiveCatalog.com at 888-701-4017 and we will confirm fit before you order.
How is the plate attached to the BCD?
It mounts to the multi-mount matrix points on the HYDROS PRO using the two included stainless steel screws and washers. That gives a fixed, stable platform rather than a knife clipped loosely to a D-ring, so the blade sits in the same position on every dive. The plate measures 4.53 in by 0.98 in by 0.79 in.
How much does the plate weigh and will it affect my trim?
SCUBAPRO lists the product weight at 0.04 lb, so the plate itself has effectively no impact on buoyancy or trim. Any noticeable change comes from the knife you choose to mount on it.













