DP Slider offers a camera dolly system that is smooth to operate and simple to setup. Designed with roller bearings, the linear motion of DP Slider is ultra smooth. In addition, the carriage guide is made of aluminum channel to provide a light weight yet sturdy system. DP Slider can be used on table tops or directly on the ground. It can be mounted on a single tripod or light stands. It can be orientated on an angle, upside down or even sideways and it will always slide smoothly. In addition, a unique feature of DP Slider “V” Series is its ability to provide VERTICAL slide to emulate crane motion. www.dpslider.com