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

The locking lever release is opened or closed by only using finger force, and once the clamp is locked down onto the plate, it has a holding power of up to 50 lb. At the top of the clamp it features three counter-sunk sockets. The center socket has female 3/8"-16 threads and it accepts metric 6 and 1/4"-20 threaded screws via a bushing adapter when mounting to a ball head stem. Two additional 1/4"-20 threaded holes are spaced 45mm apart from the center socket.

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 stainless-steel locking-lever has a low profile, and the lever hugs the side of the clamp very closely, so it is very unlikely to snag onto clothing or something else in the field. The clamp has a built-in bull's-eye spirit level, which keeps your camera leveled in a horizontal plane.

Load Capacity: 50 lb    Arca-Type Compatible    Laser-Engraved Scale    Stainless-Steel Locking Lever Release    Type II Anodized-Aluminum Construction    Bull's-Eye Spirit Level

Arca-type compatible clamp

Easy top-loading, low profile clamp

Stainless-steel locking lever-release cam, which opens and closes with finger force

Clamp has up to 50 lb of holding power

CNC machined 6061-T6, Type II black anodized aluminum

Laser-engraved scale for repeated positions and a bullseye spirit level to keep camera leveled

Top center socket has a 3/8"-16 thread on the bottom and counter-sunk hole on top, but accepts metric 6 and 1/4"-20 threaded screws via a bushing adapter to mount to a ball head stem

Two additional 1/4"-20 threaded holes are spaced 45mm apart from center socket

Related Questions and Answers

Q: 1. Will this replace the top of my Arca P0 Monoball? And if so how do you control the rotation? (the current plate has a screw to adjust tension on the rotation. thanks

A: yes you can replace the top with this unit

Q: 2. Does the 80mm version fit on the MH-01 head?

A: Yes both clamps can work on the Really Right Stuff Monopod Head, MH-01.

Q: 3. Will this clamp fit on another brand Ball Head I have a Sirui?

A: I mounted mine to a FLM ballhead using the provided 3/8 to 1/4 x20. Works great

Q: 4. what are the proper dimensions for the plate that can go on this?

A: The Really Right Stuff B2-LLR-II Lever-Release Clamp works best with RRS plates that are 2.9" or longer.

Q: 5. Will this clamp fit on the Sacheler Ace M sliding plate?

A: Yes, the Really Right Stuff B2-LLR-II Lever-Release Clamp will fit on the Sacheler Ace M sliding plate.

Q: 6. I have a RRS BH55 ballhead with the 60mm LR (B2-AS II LR) plate on it now. I am contemplating buying the 80mm LR plate for the ballhead for use with my longer lenses and also for the extra locking length on my night sky and long exposure photography. I know this will fit, but I am assuming I will need the 3/8-1/4 reducing bushing to mount this plate to my ballhead stem? Will the interior threading of the bushing interfere with the mounting screw? The plates that come on this ballhead have unthreaded center mounting holes so the mounting screw just drops thru.

A: This clamp use a bolt that screws in and typically screws to the stem of a ball head. You will have to figure out what the thread size of your ball stem is and correctly match the head of the bolt to sit into the countersunk hole of the clamp. The center socket has female 3/8"-16 threads and it accepts metric 6 and 1/4"-20 threaded screws via a bushing adapter. If your head takes a 3/8"-16 bolt, that would be ideal, otherwise you would need a reducer.

Q: 7. will this rrs 80mm fit on my silkballhead 800?

A: You would need a Reducer Bushing to make it work Oben 3/8"-16 to 1/4"-20 Reducer Bushing B&H # OB1039

Q: 8. Will these clamps open and close if put on a large flat base (larger that the entire clamp)? Its hard to tell in the pics if the moving part of the clamp is stepped up from the rest of the bottom allowing it to move freely or if this is just for a stem attachment. I have the RRS TA-LB lever release clamp but that has a solid bottom covering the entire clamp, even underneath the moving part.. it appears that this one doesn't have that.

A: Yes, it will still open and close on a larger base. The clamp goes to the bottom but it is slightly curved near the clamp to allow for movement.

Q: 9. The centre hole accepts a 3/8-16 post. What is the maximum length of that post, before it protrudes through the top & interferes with the clamp?

A: It is 12mm thick

Q: 10. Hello, will this clamp fit on my Oben BZ-226T ballhead ? Thank you

A: Yes if you just use an allen/hex key to unscrew the plate on the ball head, then you could replace it with this RRS B2-LLR-II.