Broad base design that includes a tool tray. Wide mounting area to safely secure frames. Patented diamond coated ratchet gripper. Quick 2-point mounting system. Drop weight tensioner (8-90lb range). * VALUE ADDED BONUS! Tools included (Gamma Pathfinder Awl, Awl, Pliers, Razor Cutter) * 360 degree rotation. Strings tennis, racquetball, badminton and squash.