Main Features:- 1/4 and 3/8 inch universal screws, suitable for most of the tripods, rails, stabilizers, and different devices, for photography- Fast switching between different devices without replacing the quick release assembly- Red safety pin prevents sliding accidentally which can keep your camera camcorder safe - Bubble level to help indicate how much of your slant- Rubber mat on the surface prevents the wear of the camera- Aluminum alloy material, processed CNC and surface oxidation treatment- Compatible for Manfrotto 577, 500Specification:- Material: aluminum alloy- Screw: 1/4 inch, 3/8 inchPackage weight: 0.315 kg Package Size(L x W x H): 14.00 x 10.50 x 3.50 cm / 5.51 x 4.13 x 1.38 inchesPackage Contents: 1 x Quick Shoe Plate