Item Type: Quick Release Safety Rail Material: Aluminum Alloy Gross Weight: 39g / 1.4oz Product Size: Approx.50 x 20 x 10mm / 2.0 x 0.8 x 0.4in Package List 1 x Rail 2 x Screw 1 x Hex Socket Wrench 11/4in Screw Interface: The product comes with 1/4in screw interface, the fixed range in the chute is 33mm, free adjustment, easy to use. 2Premium Material: This quick release safety rail is made of premium aluminum alloy, which is strong and wear resistant and has a long service life. 3Strong Compatibility: The interface can be changed quickly, which is convenient for work and use. It can be adjusted according to the needs, and the compatibility is more strong. 4Spring Pins: This camera safety rail is designed with anti drop spring pins at both ends to prevent it from falling off, which is safer. 5Universal Design: Universal chute design, don't worry about model mismatch, light weight and portable, you can use it with confidence.