RK UCT2100 chain breaker and rivet kit (NOT for 630/632 chain)RK universal chain tool kit cuts AND rivetsRK Universal Chain Breaker, Press and Rivet Tool KitAll the robust components simply click into place. Comes with concise imaged (colour) instruction leaflet. Cleverly designed to compress the side links onto the drive chain the correct distance to give security and avoid squashed sealing rings. Ergonomic handle allows for a more comfortable and secure grip Correctly flares RK's special pin hole rivet links