Clamp base RAM Mounts Tough-Claw Small RAP-B-400U, composite, 2.54 cm ball, black

The RAM Mounts Tough-Claw Small Clamp Base with Ball (RAP-B-400U) is a compact, tool-less mounting base designed to clamp securely to round, square and irregular rails and bars. It accepts tube and rail diameters from 0.625" to 1.5" and also clamps to flat surfaces from 0" to 1.14", offering a stable platform for attaching devices such as tablets, action cameras, smartphones and rod holders. The integrated ball socket enables 360° positioning when paired with compatible RAM arms and device holders, while the black corrosion-resistant finish suits outdoor and mobile applications.

Advantages

The Tough-Claw offers quick tool-less installation and removal, a broad clamping range for both curved and flat surfaces, and a compact, durable design that maintains a secure grip under vibration. The ball base provides flexible orientation and works with the RAM mounting ecosystem to deliver reliable, repeatable positioning for accessories and devices.

Suitable for

• Mounting tablets and smartphones on handlebars, seat posts and yokes
• Attaching action cameras to rails and bars
• Securing rod holders for fishing rod storage
• Use on roll bars, kayak rails and other tubular frames

Key specifications

• Clamping range (rails/tubes): 0.625" – 1.5" outer diameter
• Clamping range (flat surfaces): 0" – 1.14"
• Physical dimensions: Height 4.25", Width 1.18"
• Model: RAP-B-400U
• Brand: RAM Mounts
• Colour: Black

How to use

Open the claw and position it around the rail, bar or flat surface within the specified clamping range. Tighten the clamp by hand until the Tough-Claw grips securely; no tools are required. Attach a compatible RAM arm or device holder to the ball base and adjust the assembly to the desired angle. Once positioned, tighten the arm’s fastener to lock orientation.

Recommendations

Ensure the mounting surface is clean and free of lubricants or debris before clamping. Verify that the selected rail diameter or flat surface falls within the specified ranges and periodically check tightness during use, especially in high-vibration or high-motion environments.