ChromLives Camera Quick Release thumb screw with 1/4 inch thread works with standard tripod mounting plates with 1/4" thread hole. 1/4" screw head, also a 1/4" thread on the bottom for other setup. Total length: 20mm/0.78";Thumb wheels (Knurled Cap):23.8mm/0.94" in diameter Made of aluminum alloy with black anodized for high durability. Works on Camera Mounting Plate/Camera Bracket and more. If you need camera bracket, search "B0748BL4LK" or" L bracket"