Sinvitron QZSD-06 Aluminum Camera Tripod Ball Head Ballhead+Quick Release Plate Pro Camera Tripod Max Load to 15kg Q-06 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 High-quality all-metal ball head, the sphere's diameter is 36mm, super machining, multi oxidation treatment on the surface, black touched with blue, with a very smooth hand feel and excellent durability Three independent control knob, adjust each different rotation angle of the head separately, precisely control every adjustment of the ball head Removable quick-release plate, comes with 1/4" screw, suitable for all SLR cameras; the ball head comes with a 1/4-3/8" adapter screw at the bottom, can be widely applied to various professional tripods Using this tripod ball heads are also much easier to carry and pack than tripods with pan-tilt head