SmallRig S-Lock Quick Release Mounting Device 1855 is designed for most 1/4" gear. It is made up of two parts, namely a male plate and a female plate. It could attach the bottom of monitor via a 1/4’’ slotted screw. The male plate and the female plate are locked tight via a spring spanner, thus the plates could be attached and detached quickly and conveniently and switched to other application scenarios if necessary. It comes with M2.5 threaded holes to mount Cold Shoe 1241. It is equipped with 1/4’’ and 3/8’’ threaded holes, both of which are compatible with magic arms with 1/4’’ or 3/8’’ screws. In addition, the counterbored hole is utilized to mount the monitor, plates and handles with 1/4’’ or 3/8’’ screws.