Item Type: Chain Repair Tools KitMaterial: Carbon SteelColor: BlackChain Caliper Size: Width: Approx. 47mm / 1.9in , Total Length: Approx. 140.5mm / 5.5inWeight: Approx. 38g / 1.3oz .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; } 1Simple to use, just insert the chain caliper into the bicycle chain. If the (0.75) end cannot be inserted, the chain wear rate is normal and does not need to be replaced. If the (0.75) end can be inserted, it is recommended to replace the chain. If the (1.0) end can be inserted, the chain must be replaced as soon as possible 2Can be used as a basic and important tool in daily life to help you measure the wear rate of the chain, determine whether a new chain is needed, and effectively prevent the flywheel and disc from accelerating wear. 3Length of the chain wear indicator is about 14 cm / 5.51 in. The design is flat, the size is appropriate, it is light and easy to carry, without burden, and takes up less space. 4Chain caliper is made of highquality carbon steel, with nickelplated surface, good wear resistance, not easy to wear, strong and durable, and long in use. 5It can be applied to most types of bicycles, a good helper in daily life, keep the bicycle running normally, and bring more convenience to most people.