This Motor Cycle Chain Breaker is used for the repair, splitting & riveting of new & old motorbike chains. The Chain Breaker is made from heat treated, hardened steel & can be used with chain pitches from 35 to 630. Heavy duty chains will require the pin heads to be ground off prior to breaking. Supplied with four push pin sizes for various chain pitches. The square design can easily be bolted to a work surface, fastened in a vice, or held by h&. Handle winds push pins to remove rivets from chain links for alteration & the same action is used to replace the rivets once desired length is obtained with the use of the adaptor press plate & riveting & pin anvil.