This kit will break, press, and rivet most #25 - #35 and #428 - #630 standard and O-ring roller chains. The hardened steel body has a removable handle for compact storage.Includes 3 pin sizes to fit a variety of chains.Drop forged and heat treated for long life and dependable service. Use this heavy duty chain breaker to repair your motorcycle or bicycle chains with strength and ease. Blow moled case for easy storage and to protect from loss.