The SmallRig Manfrotto Quick Plate (Manfrotto 501 Style) 1280 is designed for quick releasing between camera & base plate and tripods. It locks the camera via 1/4″-20 screw & 3/8″-16 screw; Convenient to switch from types of shooting equipment such as base plates, tripods & stabilizers. The anti-off design on the bottom surface is design to prevent the camera from accidentally loosening or falling off. Built-in anti-scratch design on the top of the plate. Compact and lightweight, only 51g.