Edelkrone's Wing Slider is a compact, manually controlled slider designed for use with camcorders, DSLRs and mirrorless cameras. Holding up to 16 pounds, Wing's SteadyMove feature uses an adjustable, fluid-cushioned movement for smooth, slippery linear glides. There's no need to worry about charging the wing, this fully mechanical slider has no batteries. Less than 7.0 inches in length, the wing provides up to four times its size over the travel distance. Attach the wing to your tripod or other mount, then grab your camera or unit to slide up to a total of 1.3' from end to end. Mount your camera on the wing with the included 1/4"-20 screw and connect it to your tripod through its 3/8"-16 threaded mount. The wing slider is made of double-layer CNC-machined aluminum. Package contains: edelkrone Wing Slider (16 lb payload)1/4"-20 screw. 1/4"-20 to 3/8"-16 1/4"-20 to 3/8"-16 1/4 to 20 reducer socket. 1-year limited warranty.