The lens need to be fixed with screws on the tripod. with this Quick Release Plate, you can quick install or remove the lens, Compatible with Arca-Swiss Dovetail Groove with Anti-slide security features, Security screws and hex wrench are included for free, Two screws (1/4 and 3/8) are not only more secure, but also can prevent the tripod mount ring rotating, Compatible with Sony FE 200-600mm f/5.6-6.3 G OSS (SEL200600G).