BikeMaster Piston Ring Compressor Set This kit comes with locking band pliers with textured non-slip grip and six bands. The locking band pliers, feature a fine locking ratchet allowing precise adjustments of the ring bands. The rings fit a wide range of motorcycles, from dirt bikes to big V-Twins. Features: Includes six bands for pistons ranging from 2-7/8 to 4-3/8, 73 to 111mm Piston ring bands are identified with bottom of cylinder markings for easy installation Packed in a heavy-duty carrying case