Super-B TB-3326 Chain Wear Gauge with Hook Function

2 In 1 Chain Checker

• Features with a precision chain checker can quickly and accurately indicate if the wear and stretch of the chain needs replacement.
• Made of stainless steel by accurate laser cutting.
• When chain with 0.75% and 1% wear, a replacement is suggested.
• Chain hook is a must for you to assemble or break the chain.