The 60mm Rapid Screw Knob Clamp by Desmondfrom 60mm Rapid Screw Knob Clamp by Desmondis a screw knob clamp with 60mm jaws. Due to its 3/8"-16 mounting hole and 1/4"-20 adapter, it can be used on virtually any head, tripod, or monopod. The clamp offers an all-metal construction design and will accommodate any Arca-style plate.

Rapid Screw    3/8"-16 Mounting Hole & 1/4"-20 Adapter    CNC Aluminum Alloy

Related Questions and Answers

Q: 1. Are the two clamping jaws of this clamp strong enough to securely hold a variety of equipments?

A: Yes Really Right Stuff B2-Duo Sliding Screw-Knob Clamp (60mm) jaws are strong enough to hold a variety of equipment.

Q: 2. Does this come with any mounting screws?

A: Yes. Unit come with the following 1/4"-20 Adapter Bushing M6 Slot Screw

Q: 3. What is the advantage of this item over the Desmond DBA-1? This is lighter, and has measurement markings on it. Is that it?

A: Yes, the Desmond DBA-2 is lighter, slimmer, has the laser engraved measurement markings and the larger removable bubble level when compared to the Desmond DBA-1.

Q: 4. Is this compatible with Manfrotto MHXPRO-BHQ2?

A: You may consider purchasing the Desmond DBAD Female to Male Boss Adapter for Select Manfrotto Heads, B&H # DEDBAD, to connect the Really Right Stuff B2-Pro-II 60mm Screw-Knob Pro Clamp to the Manfrotto XPRO Magnesium Ball Head with 200PL-14 Quick Release Plate.

Q: 5. How do you level the camera with this type of camera mount for Matterport camera?

A: The Desmond Deluxe 60mm clamp is merely a mounting clamp with a spirit level, and doesn't possess any adjustment capabilities in regards to leveling. Any axial adjustment will have to be done via your tripod legs or your tripod head.

Q: 6. 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: 7. What's the distance between the two outer mounting holes? I wanna mount this plate on a 322 ball head.

A: The two outer mounting holes on the RRS B2-Pro II 60mm Screw-Knob Pro Clamp are 30mm apart.

Q: 8. Does the tightening knob head extend below the base level of the clamp? I'd like to attach it to the top of leveling head DYH-66i. It would have to be screwed in by rotating this clamp. Bubble level of 66i does not allow attachment of clamps by rotating them into the center screw if their tightening knob extend below the bottom level of clamp.

A: Yes, the knob drops below the clamp by about 2mm. You can try using a tripod spacer like the one below; https://bhpho.to/39dgYEs or your better off get a clamp that is circular and the knob has clearance or a clamp with a lever; https://bhpho.to/2CGdONl

Q: 9. Will this fit the 498RC4?

A: No darn it I whispered it did!

Q: 10. Sunwayfoto also makes this rail with a locking lever instead of a knob. I see B&H does not carry that version. I actually prefer the convenience of the lever, but is the knob actually more secure?

A: Both are very secure and a matter of personal preference. With the knob, you can apply more tightening force than the lever but of course the lever is more convenient.