Description: Full featured professional camera slider for heavy duty camera systems that provides shake-free stability and support to cameras while shooting. Adjustable tightness: damped regulation, it's up to you. Good practicality: need no tripod, it can adapt ground and desktop shooting with sranding legs. The slider is made of Aluminum alloy and the top mounting screw is 1/4 inch fit most of cameras. You can angle the slider to get straight horizontal shots, or you can slope it on a tripod, position it vertically on a tripod, use it as a crane on a tripod, or even attach it flipped over on two tripods. Specification: Material: Alloy Size: 205*80mm/8*3.15inch Package Includes: 1Piece 2 Way Macro Focusing Rail Slider