This ball heads can withstand heavy loads, lock solidly, and move smoothly. Aiming and horizon leveling can be accomplished as one instinctive motion, and rigid lockup takes just a quick twist of one control. Using this tripod ball heads are also much easier to carry and pack than tripods with pan-tilt heads-no long, protruding handles. Simply screw the tripod ball head on your tripod. Then screw the whole tripod set to your camera. Specification: Material: Aluminium alloy (chromized) Maximum Load: 2.5kg Pan: 360 degree Plate size: 4cm diameter Screw Mount: 1/4\ , 1/4\ thread Head Weight: 105g Head Height: 7cm Color: Black Package included: 1x Mini camera tripod ball head