Leo Photo QS-70 Quick Link Set Quick Release System for quick head changes and more By attaching it between the tripod and the blind, you can quickly change your equipment. It can be used in complex and large photography systems such as time-lapse photography, so it can be set up and disassembled efficiently. Both the base and plate are equipped with imo screws for fixing to prevent accidental fall out. The integration of the base and plate is precision processed, ensuring that the equipment is secured without rattling during installation. Main Specifications: Diameter: 2.8 inches (70 mm); Weight: 4.9 oz (140 g); Plate Side Mounting Screw: 3/8 inch (thick screw); Base Side Screw Hole: 3/8 inch (thick screw); Material: Aluminum alloy; Accessories: Wrench for fixing plate side, immo-screw