5' Wide Pad for improved floatation. Contractor grade, heavy duty components. Large 1-1/4' hardened, field replaceable bushings. Larger traction bars for improved track-to-tire grip. 2 built in traction bars. Patented open side plate for excellent clean out in the pivot area. Improved side wall design for today's heavy duty tires. Built-in length adjustment. Run loose design. Self cleaning. Reduces tire wear in abrasive conditions. Adds counterweight. Provides tire protection. May be installed in 30 minutes or removed in 10 minutes. Field serviceable. Rebuildable. Reduces ground pressure by as much as 50%.