1、Made of good quality aluminum alloy, the plate is sturdy and durable, suitable for lens under 400mm. 2、Equipped with standard 1/4'' screw, compatible with most SLR cameras. 3、Folding design, the plate can be extended, with a damping knob can firmly hold the specific position of this plate as you want, 260 degree adjustable. 4、Designed with a mini bubble level on the knob, allows users to quickly adjust the camera or tripod to get a balanced view. 5、Portable and lightweight to carry, can be used for camera and telescope. Features: Made of good quality aluminum alloy, the plate is sturdy and durable, suitable for lens under 400mm. Equipped with standard 1/4'' screw, compatible with most SLR cameras. Folding design, the plate can be extended, with a damping knob can firmly hold the specific position of this plate as you want, 260 degree adjustable. Designed with a mini bubble level on the knob, allows users to quickly adjust the camera or tripod to get a balanced view. Portable and lightweight to carry, can be used for camera and telescope. Specification: Material: Aluminum Alloy Color: Black Screw: 1/4'' Compatibility: for RRS/ARCA-SWISS/KIRK ball head Fitment: for lens under 400mm Package List: 1 x Quick release plate