Articulated arm with centre lever to lock all 3 movements. Magic Arm with camera bracket 143BKT only. Your extra arm in the studio. One lever locks three pivot points. Ideal for mounting a camera, light, gobo, etc, exactly at the angle you need it. 5/8" male studs on ball joints at both ends with 3/8" and 1/4-20" female thread. Works especially well with 2915 Super Clamp. Length: 20.8"