The B2-Pro-II 60mm Screw-Knob Pro Clamp by Really Right Stuff is compatible with most Arca-Swiss style camera plates, camera bars, and multi-purpose rails. It features a captive knurled knob for a better grip when applying clamping pressure, plus safety stop relief grooves to prevent plates with safety stops from accidentally slipping out when loosened. The integrated bubble level ensures precise horizontal orientation. The base design allows the B2-PRO-II to mount directly on products rosette-type platforms. Additionally, the included rosette adapter makes it compatible with tripod heads with tongue-groove design. The top of the clamp features three threaded counter-sunk sockets, which accept 1/4"-20 and metric 6 (M6) threaded screws for mounting to a ball head stem. The outer sockets are spaced 30mm apart. The center 1/4"-20 socket is also threaded 3/8"-16 on the bottom to allow it to mount from beneath to a 3/8"-16 male stem.
- 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