Mobilize your camera rig on any tripod with the Video Dolly Fire Wheels from Fotopro. This aluminum universal dolly system allows you to move most tripods with payloads up to 33 lb smoothly with ease along flat surfaces. The three sturdy 2" diameter casters can freely rotate a full 360°, and the flip-locking knob design makes it easier to quickly set up or to fold the unit down to 21". A form-fitted carrying case is included for easy transport and storage.