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The B2-Pro-II Screw Knob Clamp from Really Right Stuff is compatible with most Arca-type camera plates, camera bars, and multi-purpose rails. The knurled knob of the clamp offers a better grip, so you can apply more clamping pressure onto a plate. The jaws open wide for plates to be top-loaded quickly and easily.
The clamp has a non-threaded, counter-sunk center socket, which accepts a M6 mounting screw to attach to a head. The CNC machined 6061-T6 aluminum clamp has a black anodized type II finish. Index marks are laser-engraved on both sides of the clamp so a position can be repeated reliably. The clamp has a built-in bull's-eye spirit level, which keeps your camera leveled.
Arca-type compatible clamp
The knurled knob offers a better grip, and more clamping pressure can be applied
CNC machined 6061-T6, type II black anodized aluminum
Laser-engraved scale for repeated positions, and a bull's-eye spirit level to keep your camera leveled
In the Box
Really Right Stuff B2-Pro-II Screw Knob Clamp with M6 Screw