The Rotochopper Track-mounted B-66 with transport dolly offers the time-saving benefits of crawler tracks for your worksite along with the convenience of rubber tires for the highway. The B-66 can be uncoupled from the dolly in minutes. To return to highway transport, the operator simply drives the B-66 onto the dolly. Domed guide rails make re-alignment fast and easy. The dolly is secured with four solid steel hydraulically actuated locking pins.