Medium duty cable tray roller. Compact design fits into tight spaces. Overlapping roller design prevents rope or cable from potential pinch points. 2x faster setup and disconnect. No loose pieces. Quick adjust push button to tightly fasten onto tray. 4 conveyer roller guide with retained spring pull-pin release to easily remove cable. Closed conveyer roller guide that traps cable within guide without damaging cable jacket. Easily handle forces of up to 100 lbs. Designed and assembled in USA. Application: use to assist pulling cables along non basket-style cable trays. Designed to aid load forces during cable pulls especially right before 90° bends and offsets.