The rugged B2-40-LR II Lever Release Clamp from Really Right Stuff is compatible with most Arca-type camera plates, camera bars, and multipurpose rails. The jaws of the clamp open wide for plates to be top-loaded quickly and easily.

The quick release locking lever opens or closes using only finger force but still provides a robust holding power of up to 50 lb for any Arca-type compatible quick release plate. The base design allows the B2-40-LR to mount directly on products with rosette-type platforms. A separately available rosette adapter makes it compatible with tripod heads that have a tongue-groove design. The clamp features a threaded 1/4"-20 counter-sunk mounting socket, which accepts the included 1/4"-20 screw or metric 6 screw for mounting to a ball head stem or other device.

Index marks are laser engraved on both sides of the clamp, so a position can be repeated reliably. The stainless steel quick release locking lever has a low profile that hugs the side of the clamp very closely to minimize the risk of damage.

Load Capacity: 50 lb    Stainless Steel Quick Release Lever    Arca-Type QR Plate Compatible    Rosette Mounting Design    Threaded Countersunk Mounting Socket

The top loading clamp can go from closed to fully open in one quick action of the quick release lever allowing speedy mounting of Arca-type compatible quick release camera and lens plates.

You can tell at a glance if the quick release lever is fully open, half-open, or locked.

The quick release lever does not protrude above or below the top or bottom of the clamp. In the closed position, it closely hugs the contours of the clamp reducing the chance of damaged.

A laser engraved scale provides precise and repeatable plate alignment.

Related Questions and Answers

Q: 1. Is the clamp adjustable so it can fit different plates ?

A: The Really Right Stuff B2-40-LR II Lever Release Clamp (50mm) is not adjustable. Only Arca-Type QR plates from Really Right Stuff, Kirk, and Wimberley are guaranteed to fit.

Q: 2. Can this clamp be installed on FLM CB-58FRT ball head?

A: While it is possible to use this clamp on the FLM CB-58FRT, it has not been tested to our knowledge. Your results may vary.

Q: 3. Can I use this with the Ronin Sc?

A: You could probably adapt it but it will throw the weight and height of the camera off and calibrating it would be difficult if not impossible.

Q: 4. It will work with arcaswiss monoballfix plate?

A: The Really Right Stuff B2-LR-II Lever-Release Clamp (60mm) is compatible with the Arca Swiss MonoBallFix QR plate.

Q: 5. Will this release system work with arca-swiss p0 ball head?

A: I bought this plate along with the Arca-Swiss P0 Ball Head this past week and it works perfectly.

Q: 6. Im switching over to Ara-Swiss from manfrotto and im still uneasy about not having a plate that automatically clmps shut automatically. How secure is the clamp arm? does it click into place or is it fairly easy to accidentally open up?

A: While it opens easily its not particularly vulnerable to accidental opening. Theres an intermediate position (90 degrees) that allows the plate to slide but still prevents lifting out. If you install the little stopper screws on the plate its still captured in this position.

Q: 7. Can this fit the Meike Metal Hand Grip for Fujifilm X-T2?

A: Yes they are Arca-Type Compatible

Q: 8. Can this be fixed on a Sirui L20S Monopod / Tripod head...?

A: Yes it will technically screw onto the top of the sirui baseplate but it will be off center.

Q: 9. Will this clamp fit on a Manfrotto BHQ2 ?

A: The Really Right Stuff B2-LR-II Lever-Release Clamp (60mm) could be mounted onto the quick release plate of the Manfrotto BHQ2, with a 3/8" bushing adapter.

Q: 10. Can this LR Clamp 60 be installed on a Manfrotto XPRO Ball Head and replace the original 200 PL-14? I would like to switch to ARCA.

A: Yes.