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, Compatible with Canon RF 100-500mm f/4.5-7.1L IS USM or Canon RF 70-200mm F2.8 IS USM, Also can be used with Canon Mount Adaqpter EOS-EOS M / Canon EF 100-400mm f/4.5-5.6L IS II USM / Canon BG-R10 Battery Grip / Canon BG-E20 Battery Grip or any mount with camera Alignment Pin Hole .