SLIK SBH-808DQ Ball Head with QR Plate, Black (618-758) Features separate panning and ball positioning locks, as well as tension control, and a round quick-release plate with a cork padded surface to prevent camera twist This aluminum ball has a numbered scale around the base for precise panning It attaches to a tripod via a 3/8"-16 thread, and a camera attaches to the 1/4"-20 threaded stud on the QR plate A bushing adapter is included for mounting the ball head to a 1/4"-20 threaded stud A separate pan lock and a numbered scale makes 360 horizontal camera positioning simple and repeatable