SuperB 2 In 1 Chain Checker And Chain Hook

SuperB 2 In 1 Chain Checker And Chain Hook

Compatible with all bicycle chains from single speed to 12 speed. Precision chain checker. Quickly and accurately indicates the wear and stretch of the chain. Laser cut and made of stainless steel. When chain is between 0.75% and 1% worn, a replacement is suggested. Chain hook is a must for you to assemble or break the chain.