JCMOTO Universal Heavy Duty Chain Breaker Tool 415 530 chain motor cycle bike XY Brand New Chain Breaker / Cutter Tool This is an essential tool to have for anyone working on their own machine. Remove chains and extra links with ease. Fits chain sizes 415, 420, 428, 520, 525, 530. Replaceable press pin is heat treated and hardened Please be sure to verify that the push pin is aligned properly with the chain pin. It is recommended to grind off the chain pin head before using this tool. This will significantly reduce the load on the tool and help prevent premature wear or damage to the breaking tips.