Neewer 47 inches/120 centimeters Aluminum Alloy Camera Track Slider Video Stabilizer Rail for DSLR Camera DV Video Camcorder Film Photography, Load up to 11 pounds/5 kilograms Full featured professional camera slider for heavy duty camera systems that provides shake-free stability and support to cameras while shooting Use on a tripod, or on a flat surface with included removable and adjustable legs with non-skid rubber feet. Multiple 1/4" & 3/8" screw holes on both ends and middle for multiple mounting options The dolly slider has a double interior rail system that uses four precision bearings to add smooth movement to any project. Two removable and legs are also included and can raise the slider up to 2 inches off of the ground. 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.