Features: High-quality all-metal ball head， the sphere��s diameter is 36mm， super machining， multi oxidation treatment on the surface， 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 3/8�� screw hole at the bottom， can be widely applied to various professional tripods. Main Material: Aluminum Base Diameter: 55mm / 2.17" Height: 100mm / 3.94" Maximum Load: 8kgPackage Included: 1x Tripod Ballhead 1x Quick Release Plate