Risk Stainless Steel Go/No-go Bike  3 in 1 Chain Checker MTB Bike Road Bicycle Chain Wear Loss Indicator Checker W/Chain Hook

Features:

 Instantly advises you when it's time to change the chain,also have the funciton to meaure bolts length and diameter,Chain Hook.

Specifications:

 Weight : 0.035kg
 Color : Silver
Material : Stainless Steel