Features: Superior quality aluminum alloy is used to ensure a light weight but super high strength support. Precise dimension to fit perfectly.Suitable for most ball heads-. Aluminum Anodized surface-treatment assures years of corrosion and abrasion-resistant operaton. Special anti-slip rubber pads enhance the grip between each plate and the mounted gear, and protect the gear from any damage due to mounting. This Quick Release L Plate System has been designed to be compatible with- other brand quick release systems-. Specifications: Color: Black Material: Aluminum alloy Size:Mixed As Pictures Optional Type: L130A/L130B/L130C/L130-50 Mounting Screw: 1/4inch for SLR DSLR camera quick assembly board Note: Camera and other accessories are not included. Package includes: 1x Quick Release Plate