The B2-FABN Micro Clamp from Really Right Stuff has a smaller footprint compared to other clamps on the market. The Micro Clamp accepts camera straps, becoming a convenient way of carrying your camera around, and many Arca-type camera plates, multi-purpose bars, camera bars, and L-brackets are compatible with the Micro Clamp.

There are three ways a camera strap can attach itself to the plate. First, located at the bottom of the plate, the Quick Disconnect (QD) socket is compatible with all Really Right Stuff and most industry-standard push-button QD straps, and has a load capacity of 25 lb. Second, two 1/4"-20 sockets next to the QD socket accept straps with the same swivel 1/4"-20 male attachment. Third, camera straps that are no wider than 5/8" or thicker than 1/8" can loop through the built-in strap bosses on either side of the clamp.

This Micro Clamp is made of CNC machined 6061-T6 type II black anodized aluminum with a 1144 steel insert for the QD socket. Finally, the integrated QD socket has been strengthened with a ferritic nitrocarburizing treatment, which makes it resistant against wear from constant use.

Arca-Type Compatible Clamp    Integrated Quick Disconnect Mount    2 x Strap Lugs    2 x 1/4"-20 Sockets    Anodized Aluminum Construction    Wear-Resistant Steel Socket    QD Load Capacity: 25 lb

Arca-type compatible clamp

Steel QD socket is compatible with most industry-standard push-button QD straps and with all Really Right Stuff QD Swivel Mounts and Sling Straps

CNC machined 6061-T6 type II black anodized aluminum with a 1144 steel insert

Two strap lugs accommodate straps up to 5/8" wide and 1/8" thick

Two 1/4"-20 sockets located on the bottom of the clamp

Related Questions and Answers

Q: 1. What is the difference. between this micro clamp and Really Right Stuff B2-FABN Screw-Knob Clamp with Strap Bosses (38mm)?

A: The B2-FABN Micro is a 22mm Clamp compared to the B2-FABN which is 38mm. Also, the B2-FABN-Micro has a QD socket for compatible use with the Magpul MS4 Dual QD Sling or the appropriate Magpul QD swivels. There are also two 1/4"-20 accessory sockets on the B2-FABN where the B2-FABN just has one. Lastly, the B2-FABN has two dovetails of opposing direction. A bottom male dovetail 90 degrees in orientation to the female clamp above.

Q: 2. how wide are the three strap bosses? Will a 1" strap fit?

A: The side lugs of the Really Right Stuff B2-FABN Screw-Knob Clamp with Strap Bosses (38mm) will fit a 0.70" strap, the front lug is 0.98" max, and both are 0.125" thickness maximum.

Q: 3. Does the diameter of the shaft extend below the bottom plane, like some of the cheaper clamps that people have complained about?

A: The Really Right Stuff B2-Pro-II 60mm Screw-Knob Pro Clamp (B&H# REB2PROII) is made with exacting precision and it will fit the intended heads without having any problem like the one you mentioned: Really Right Stuff ball heads Arca-Swiss current model ball heads Manfrotto 468 ball head Manfrotto 468RC2 ball head Manfrotto 488RCO ball head Manfrotto 469 ball head Manfrotto 469RC ball head

Q: 4. Thank you everyone for your response. But I'm still wondering: if I mount this on a flat surface, and that surface extends out past the bottom of the clamp (not to the knob, of course), does the diameter of the shaft allow for clearance so the clamp sits firmly on the flat surface? Sometimes I use clamps on something other than ball heads. Thanks again.

A: Yes, the bottom surface of the Really Right Stuff B2-Pro-II 60mm will seat flat on the camera support plate system similar to BH #PLPMPMT1009. However, the knob can not be under the same plate surface because it's larger than the clamp high. The knob is 25mm while the plate is only 18mm. I will recommend the BH #REB2LRII with the Level since this part is the same high as the clamp and won't interfere if you place your plate on a flat surface.

Q: 5. Do I need anything else to attach this to a tripod QR plate?

A: Hi Tony - thanks for asking. I hope I understand your question correctly: The RRS QR plate attaches directly to the top of this adapter, we supply the screws. You can attach a tripod plate beneath this with the 1/4 and 3/8 holes on the bottom. so no, you don't require anything else. If we misunderstood your question or didn't answer it to your satisfaction, drop us a line at sales@redrockmicro.com and we'll help clarify.

Q: 6. Will this fit the Manfrotto 494 Ball Head?

A: No, the Really Right Stuff B2-FAB 38mm Screw-Knob Clamp will not fit onto the Manfrotto 494 Center Ball Head with Universal Round Disc Mount.

Q: 7. 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: 8. 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: 9. Can I mount this to a video tripod, like a Sachtler or Miller?

A: Whether you can mount the Really Right Stuff B2-Pro-II 60mm Screw-Knob Pro Clamp on your existing head will depend on the connecting method on your head. This clamp features one threaded 3/8"-16 recessed center socket flanked by two threaded 1/4"-20 recessed center sockets, the RS-Pro-II can be mounted from beneath directly on a tripod head platform, or from above using 1/4"-20 or M6 screws.

Q: 10. What is the diameter of the top plate?

A: The manufacturer does not mention this information. This is a Arca Swiss mount so you will need a Arca style plate for compatibility. https://bhpho.to/3q0MG1v