COOLWHEEL Bicycle Chain Checker Bike Wear Indicator Gauge Measuring Ruler Tool Bike Parts Repair Kit for Mountain and Road Bikes Folding Bicycle

Description: An useful tool to measure the wear level of the bike chain to determine whether the chain needs to be replaced. Features: * Chain damage detection * Chain hook * Screw measurement * Presta valve nut disassembly * Presta valve core disassembly * Presta valve extension rod disassembly * 3 lever checker:0.5% 0.75% 1% Specification: Material: Stainless Steel Color: Silver Size(L*W): 125*50mm Chain Detection: Compatible with singular, 6, 7, 8, 9,10 speed chains Packing List: 1 x Bicycle Chain Checker