Allowing you to add mobility to nearly any tripod, the Rock Solid Tripod Roller from Tether Tools is a universal tripod dolly for quickly and easily moving a tripod-mount camera or workstation around the room. The 7.6cm rubber-cushioned glide wheels enable smooth rolling, and each incorporates individual foot locks for securing the dolly in place. The legs of the dolly are extendable in order to accommodate tripods of varying heights and to adjust the working base diameter between 58.4 to 78.7 cm. The legs also feature easy-to-secure tightening knobs for locking the tripod in place on the dolly for greater stability. Additionally, the legs also collapse for increased portability, and a built-in handle facilitates carrying. Aluminium alloy legs features an ABS plastic housing A metal locking thumbscrew and marring-free rubber feet are used to secure tripod legs in place All-metal locking casters with cushioned rubber threads secure the 3" wheels in place and offer smooth and stable performance The dollys base legs can expand from the centre, offering a total working base diameter of 58.4 to 78.7 cm