DP-50 Features a retractable lip. Precision CNC machined from solid aircraft-grade aluminum. Width: 42mm. Weight: 30.8g . Length 50mm. Height: 9mm. All metal construction. Includes: 2 allen wrenches, 1/4" hex screw and 2 safety stop screws. Please note: This plate is not compatible with RRS Lever Clamps. (RRS Levers are not adjustable).