Features: Can be used with tripod, rail, stabilizer and different devices, for photography. Fast switching between different devices without replaceing the quick release assembly. Made of aluminium alloy, very durable. This item is composed- of a quick release clamp adapter and a quick release plate. The ball-head features 1/4 inch thread screw, suitable for most cameras, camcorders, tripods, mini tripods, sliders and monopods. Specifications: Material:Aluminum Alloy Size: Approx.6.2x4.5cm/2.44x1.77inch Color:Black Note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks for your understandings. Package includes: 1 x Quick Release Plate 1 x 1/4'' Mounting Screw