Features a fantastic spring-loaded ball bearing mechanism that allows you to pull a 1/4''-20 top mount out of bottom portion just in a second. The aluminum built portion bottom with a 1/4''-20 female thread can be securely attached to any lighting or video accessory comes with 1/4''-20 male stud. The spring locking mechanism with hex-shaped receiver built on the bottom portion not only keep the top mount from rotating but make it easy and quick to be attached or removed by just pushing the release red collar down. Ideal for mounting monitors, lightings and mics on the articulated arms or anything comes with 1/4''-20 male thread.