Selens Nordic N1 80cm Carbon Fiber Rail Camera Track Slider with Linear Bearing Sliding Platform & Adjustable Legs for Pro DSLR Video Camera 1.Material:Aircraft Aluminum + carbon fiber. 2.Simple,fast installation -- In a tight shooting space conversion,required equipment installation, disassembly and carry portability.Selens uninstall just over ten seconds,the normal installation takes only 2-3 minutes. 3.Imported bearing pulley -- Pulley with six import bearing pulley,longer service life,long time operation is smooth and silent. 4.Multi-stage adjustment -- Slide 4 foot multi-level adjustment,for a variety of shooting situations.On uneven ground also can quickly adjust the angle,make sure that the rail is level working condition.Multi-stage adjustment. 5.Extended without limit -- Includes 3/8" and 1/4" Mounting screw,studio lighthouse Interface,can be used directly with a tripod.It allows you to mobilize any movie camera, video camera, digital camera or other piece of equipment.