Weefine High-Density Arm Floats
The Weefine High-Density Float Arms are compact buoyancy blocks designed to attach to underwater camera trays and arms, helping photographers fine-tune rig balance and lift. These arm floats are ideal for divers who shoot with a heavier mirrorless or DSLR underwater housing and want to reduce fatigue and improve handling.
Use them when your rig feels bottom-heavy or when adding strobes, lights or wet lenses increases negative buoyancy. These floats are **not** a substitute for full tray/floating arm systems — they work as supplemental buoyancy for arms or floats mounted alongside your camera gear.
- Add-on buoyancy blocks that clip or fit over your existing arms or clamp systems.
- Best for underwater photo/video rigs needing incremental buoyancy support (e.g., macro kits, lights, long lenses); not designed for full tray-systems replacement.
- Compatible with standard 25 mm (≈1-inch) diameter rods or SN ball-arm mounting (verify fit with your tray brand).
- Material and buoyancy ratings listed: e.g., 105 g float block model.
- Not depth-rated independently — used within your existing housing/arm system only; check overall rig depth rating.
Compact Design & Modular Use
The high-density blocks are compact and easy to integrate into your existing tray system without needing full floating arms. Their small footprint makes them ideal when space is limited or when you want to add lift without major rig changes.
- Small outer diameter (~7 cm) and central hole fits most standard arms.
- Add one or more blocks in sequence for incremental buoyancy adjustment.
- Closed-cell foam prevents water absorption, maintaining consistent buoyancy.
Fine-Tuning Rig Balance
Rather than replacing your entire arm system, these floats allow you to fine-tune buoyancy for specific lens or light setups. They help you achieve a more neutral rig, reducing wrist strain and improving stability during long dives.
- Ideal for macro lenses or added lighting where extra buoyancy is needed.
- Helps reduce top-heavy or bottom-heavy feel underwater.
- Improves rig comfort and trim without major hardware changes.
Multiple Buoyancy Options
Choose from different float-block weights to match your rig’s lift needs. The lowest density block is 105 g buoyancy; other sizes are available for heavier setups.
- 105 g block (model BD7040) gives modest lift for lighter rigs.
- Other models: 185 g (BD7065), 195 g (BD9040), 310 g (BD9065) – check availability.
- Stack multiple blocks for heavier rigs instead of switching to a full float-arm system.
- Underwater photographers who add macro lenses or large lights and need extra lift.
- Divers shooting long-lens setups in saltwater where bottom-heaviness is a challenge.
- Rental rigs that need modular buoyancy adjustment for different user setups.
- Travel rigs where you want minimal extra gear, but still need to tweak buoyancy on-site.
Pros
- Low-profile buoyancy solution that integrates into existing arms without full replacement.
- Multiple buoyancy weights allow precise tuning of rig trim.
- Closed-cell foam construction resists water absorption for consistent lift over time.
Cons
- Does not provide as much buoyancy as full floating-arm systems — may not suit very heavy rigs.
- Requires compatible rod/clamp system — may need additional adapters or modifications.
- No depth rating listed for the float blocks themselves — depth rating depends on entire rig.
These buoyancy blocks are made by Weefine, a recognized manufacturer in underwater photography accessories. They are available through Bluewater Photo, where purchases include expert setup guidance and lifetime support on gear setup and technical questions.
Standard returns apply per Bluewater Photo’s returns policy; please check current terms at checkout.
Your underwater rig just got easier to handle — enjoy more time capturing shots and less time fighting heavy gear.
Specifications
- Material: High-density closed-cell polyurethane foam.
- Buoyancy Options: 105 g (BD7040); 185 g (BD7065); 195 g (BD9040); 310 g (BD9065).
- Outer Diameter: ~70 mm (≈7 cm) for 185 g block.
- Inner Hole Diameter: 25 mm (fits standard rods).
- Compatibility: Fits Most 25 mm (≈1″) rods/tray arms; confirm with tray manufacturer for full compatibility.
- Weefine Arm float
Weefine High-Density Arm Floats — FAQ
- Can I stack multiple float blocks on one arm?
Yes — you can stack more than one block (e.g., 105 g + 185 g) on an arm to incrementally increase buoyancy. Ensure clearance and mounting stability when stacking.
- Will these arm floats change my rig’s depth rating?
No — the float blocks themselves don’t carry a separate depth rating. The overall rig’s depth rating is determined by your housing and arm system.
- What rod diameter do these blocks fit?
The inner hole is 25 mm diameter, suitable for most standard arms/trays. Please verify your arm size before purchase.
- How do I care for these after dives in salt water?
Rinse thoroughly in fresh water after each use, shake off excess water, dry, and store in a cool, dry place to prevent corrosion of adjacent metal components.
- What’s included in the box?
The package includes the specified buoyancy block only. Rods, clamps, trays and other gear are not included — purchase separately.
