Based on the proven concept of the Classic Focus Dolly, the new Focus Dolly Light is a complete, lightweight, ultra-portable dolly for track use. It fits together in less than three minutes, and the design incorporates dual features. When closed down, the dolly becomes a portable flightcase, the push/pull handle functioning as the transport handle. The dolly track wheels or hard rubber wheels simply pop in the sockets of the dolly. The trackwheels, which operate on both curved and straight track, are stored inside the dolly case for transportation. The Focus Seat Support completes the focus dolly as a multi purpose package.