The B2-mAS (as in mini-AS clamp) can be mounted with a flat head screw on mini-ballheads with a threaded female 1/4"-20 socket, or onto a threaded 3/8"-16 stud. **Please note, the 3/8"-16 threads of the B2-mAS are very shallow (only about 2.5 threads) and should not be used in heavy-weight applications.
It can also be mounted back to back with our B2-FAB mini-clamp when you need a double-sided clamp (as when using our camera bars). The tabs on the bottom of the B2-FAB allow it mount in the recessed "cross" on the bottom of the B2-mAS without twisting.
Made for minimal clearance and minimal weight and compact size, the knob of the B2-mAS mini-clamp bears directly against the clamp jaw and is "captive" can't be lost in the field.