The Tru-Tension Link Monkey makes adjusting the length of a motorcycle drive chain length quick and easy. It is perfect for setting the correct length for new chains when fitting to a bike or when adjusting sprocket size. Made from hardened steel, it is ultra-durable and an all-in-one product to split a chain, press fit connecting link plates and rivet pin heads. Suitable for use on “X” and “O” ring chains from sizes 420 to 530, covering most road and off-road manufacturer motorcycle chain sizes.