ITEM NAME:3-in-1 Bike Chain Checker Wear Indicator Measure Gauge Hook Screw Checker Description: 3-in-1 multi-functional bike chain tool- chain wear indicator, chain hook and screw thread pitch checker Premium 304 stainless steel- anti-rust, anti-corrosion and high strength for long time using Simple operation, high efficiency, accurate and easy storage/carrying Checking screw bolt length, thread pitch without buying another tool When reached the 0.75 (75%) and 0.01 (1%) wear means the chain must be replaced Specification: Length: 14cm/ 5.5 inch Color: Silver Package Includes: 1 Piece Bike Chain Gauge Note: Please allow slightly difference due to manual measurement. Color may be slightly different since different monitor. Thanks! SKU: DMO0000185754043893.3-in-1 multi-functional bike chain tool- chain wear indicator, chain hook and screw thread pitch checker. Checking screw bolt length, thread pitch without buying another tool. 1 Piece Bike Chain Gauge.