Optio Cycle Chain Wear Tool Checker Indicator Gauge Bike

PRECISE CHAIN WEAR MEASUREMENT: This chain checker tool quickly measures chain stretch at 0.75% and 1.0% wear levels to help replace your bike chain before drivetrain damage occurs. COMPATIBLE WITH 7–12 SPEED CHAINS: The bike chain checker works with Shimano, SRAM, Campagnolo and many other modern bicycle drivetrains for MTB, road bike, gravel and e-bike use. COMPACT & LIGHTWEIGHT DESIGN: This bicycle chain wear tool is compact enough to fit into a saddle bag, bike tool kit or jersey pocket for maintenance during rides and tours. DURABLE STAINLESS STEEL: The chain wear indicator tool is made from robust stainless steel for reliable long-term use and precise drivetrain wear checks. PROTECT CASSETTE & CHAINRINGS: Regular checks with this chain gauge help reduce wear on cassette sprockets and chainrings while extending drivetrain lifespan and reducing repair costs.