The Tru-Tension Link Monkey Chain Breaker Tool makes attaching your new chain or adjusting the length quick and easy.Compatible with 420 - 530 motorcycle chainsAble to Split as well as link chains togetherSuper Durable and easy to useThe Tru-Tension Link Monkey Chain Breaker Tool makes the attaching your new chain or adjusting the length of an existing motorcycle drive chain length quick and easy. This is the perfect tool for setting the correct length for new chain for fitting to a bike or when adjusting the sprocket size. The Link Monkey is manufactured to the highest standard for durability thanks to it hardened steel design. It is designed as an all-in-one product to split a chain, press fit connecting link plates and rivet pin heads.This tool is suitable for use on X and O ring chains from sizes 420 to 530, covering most road and off-road manufacturer motorcycle chain sizes.