Features: Universal 1/4in mounting screw is compatible for most brands of digital and DSLR cameras. Mainly adopting premium plastic, sturdy structure and durable for use. Smooth rack and pinion movement provides accurate and fast adjustment of the rail. It allow movement in four directions, right, left, forward and backward, with precision scale to get quick focusing. Perfect for close-up shooting and hep to position camera and focus on subject with high precision. Specification: Condition: 100% Brand New Main Material: Plastic Color: Black Screw: 1/4" Size: Approx. 18 * 16.5 * 9cm / 7.1 * 6.5 * 3.5in Weight: Approx. 414g Packing List: 1 x Rail Slider * Camera and other devices are not included. Package List 1Universal 1/4in mounting screw is compatible for most brands of digital and DSLR cameras. 2Mainly adopting premium plastic, sturdy structure and durable for use. 3Smooth rack and pinion movement provides accurate and fast adjustment of the rail. 4It allow movement in four directions, right, left, forward and backward, with precision scale to get quick focusing. 5Perfect for close-up shooting and hep to position camera and focus on subject with high precision.