The SLIK PBH-635AS is a compact, professional ball head with a newly-designed “Cam Lock”, Arca-Swiss compatible quick-release system, for fast and secure camera mounting. The “Cam Lock” quick-release system allows the camera to be attached or detached from the head, without the need to slide the plate it in or out of the groove. The PBH-635AS ball head has a capacity of 6kgs, it features a separate panning-lock that holds the ball in place, while allowing the head to rotate (pan) through 360 degrees. A tension knob controls the rate of the ball's movement. The head is capable of handling a full-sized professional DSLR with standard lens. In addition to the standard easy grip ball-lock lever, the head has a tension adjustment knob to fine-tune the drag on the ball movement. It also has a separate panoramic lock with degree markings around the base to facilitate stitched-panoramic photos. Height: 10. 2cm, Tripod mounting socket: 3/8" and 1/4", Camera mounting screw: 1/4", Maximum suggested load: 6kg, Base diameter: 56mm, Size of camera platform: 38x63mm