CowboyStudio Camera Camcorder Video Movie DSLR Slider Glider Track Dolly Stabilizer Tripod Track for DSLR Camera, 31.5 inch One (1) 31" Camera Sliding Rails, Two (2) Feet, One (1) Camera Mount Platform, Four (4) Hex Screws, 1/4" to 3/8" Thread Adapter Tension adjustment/locking knob Use on a tripod or on a flat surface with included feet Could be used horizontally or vertically Creates Hollywood-quality production shots