This product is a dream, it is reliable,compact,easy to use. Your DSLR is securily fastened in operation and quickly released, no loss of time. I am so satisfied, I bought a second one for my shoulder rig,I leave the other one on my tripod and then can either use one or the other without having to reinstall the base plate, real quick change. The Really Right Stuff adaptor is so well designed it does not take too much space so you can leave on the DSLR when handheld or in the case or bag.

Don't let the size fool you, this is a very useful and strong clamp like the rest of the RRS equipment. The fact that it can be rotated makes it even more useful than any other clamp. It can be used for camera mount as well as lenses. There are many clamps from other manufacturers but this thing is designed to stay where you want it to stay.

I bought this because I very much enjoy the arca-swiss type quick release system. Prior to using this I had used a normal clamp and mounted a quick release clamp on top of that. The problem with that was that sometimes the quick release clamp would shift slightly, which was problematic most notably in regards to my follow focus. With this everything stays straight and secure which is great. I bought a knob style really right stuff clamp with dual mount instead of the one the lever style they mentioned, because I had been using non RRS plates, and it works great!

I use this with the RRS 28” and 18” camera bars. This clamp is great for mounting collared lenses perpendicular to the track of the camera bar. Contrary to what the other reviewer says, my experience with RRS lever releases has been great and I’ve never “accidentally “ unlocked a lever. The way the end of the lever tucks in around the clamp, you’d have to work at it to catch the lever and release it. Anything will wear out over time but don’t let that scare you. RRS gear is built to last and is backed by a solid warranty and great service. I’ve also had no problem using other manufacturers’ plates with my RRS clamps. �That said, better quality plates that are close to the Arca standard are the way to go. �I’ve used Wimberley, Kirk and Giottos plates with no issues. RRS gear isn’t cheap but in my experience you get what you pay for.

As recommended, I acquired the RRS B2-LR-II. If you are doing photo with video inclination this setup is the only one available at this time to have arca swiss accessories mounted to 15mm rods. -pros- High quality, perfect fit. (RRS makes the best and most precise accesories, other brands do not lock in the same especially for lever releases that could just slide off due to microscopic differences in fit vs knob releases that tighten) Connects to the quick release via two supplied phillips screws. Fits both ways to adjust forward or side to side arca swiss plates (connecting via base of camera that goes side to side or via lens foot that goes forward and back) -cons- Price, does not include the RRS B2-LR-II Does not come with the standard RRS Allen key screws, instead you must Carry another tool, the phillips screw driver if you wish to rotate the B2-LR-II Overall, it's made by Redrock Micro to fit RRS. You pay for the quality. With it's various threads this item can fit a tripod attached to the base with another quick release clamp of your choosing with its two different thread sizes which in turn allows some creativity to build up your rig. Five stars because it is what it is and does what it's meant for.

The exact tool I need to complete my RRS pano set up.

As always excellent product /great service

The pinnacle of engineering. There is nothing that could be improved about this. Perfect for RRS rails and because it has some screw clamps you can also fit off-brand rails as well since there is some size tolerance to what it can clamp.

I have used these clamps in my pano rig for 2-3 years without issues.��

This purchase was to replace my old mini clamps which were lost whilst travelling in the high arctic.� So just make� sure they are always tightened down on the rail when travelling, or better still, remove while travelling to be on the safe side.� �I was unable to do panos in Svalbard and the Faroes� which was frustrating as couldn't get replacement clamps delivered in time.

The double clamps provide maximum flexibility and the necessary clearance to use with 100mm Lee filters.

I prefer lever release style to screws but given size of unit that's presumably not a viable option.

These are fantastic. The camp, when connected, allow you to use the panning base of a pano-gimbal head as a nodal slide for single-row panoramas. Because you can connect the clamps in either orientation, you rotate one of them 90 degrees for use with either a collared lens or a camera body with L-plate. Furthermore, one of these clamps has a dovetail on it perpendicular to the jaws of the clamp. This allows you to convert a nodal rail with integral clamp for use with collared lenses, as placing this clamp in the nodal rail's integral clamp allows for clamping of plates parallel to the nodal rail.