Chain Checker -Chain wear Indicator

BBB ChainChecker BTL-51

Chain wear Indicator -Always know when your chain is worn -Easy to use chain wear checking tool. -Checker indicates when the 0.75% or 1% wear is reached. At this point the chain should be replaced. -Integrated chain hook holds links during assembly. -Added valve tool and 5/6/8mm box wrench makes this a unique chain checker & multi-tool.