Benro's MoreOver12 Dual Carbon Rail Slider supports loads up to 26.5 pounds, while allowing you to add cinematic linear movement to your shots with DSLR rigs or large video cameras. The carriage features four bearings that allow it to glide across a pair of 22mm carbon fiber rails. The carbon fiber rails are designed to create smooth and quiet operation. The slider is equipped with a flywheel and belt drive which provide a precise, hand-cranked motion which provides motion control and smooth ramps in and out of your slides. A fixed 3/8"-16 screw on the carriage is provided for attaching an optional flat base tripod head, while a cheese plate on the bottom of the rail provides multiple 1/4"-20 and 3/8"-16 threaded holes for center-mounting. For supporting the slider on two tripods, each end block features a 3/8"-16 female adapter. By removing the adapters, the end blocks can be mounted on stands with 5/8" studs. For tabletop and ground level use, all-terrain legs and articulating feet allow you easily adjust the level of your slider. A bubble level is integrated into the carriage to assist with leveling. When it is time to call it a day, the slider fits into the included carry case.