The Velbon QRA-635L(B) Magnesium Alloy Quick-Release Tripod Adapter for 35mm Cameras. Specifically designed for 35mm cameras, this amazingly light adapter features an extra wide mounting platform. The camera pad is reversible. It has a flanged edge to prevent camera slippage when shooting vertically and is reversible when not needed. It features a "Camera Safe" slide mounting quick-release platform with "Auto Lock" retaining system.