Features1Fine material, not easy to rust. 2High intensity, efficient speed transmission. 3Built according to standard specifications, closely assembled, the chain is beautiful and practical.SpecificationIs it difficult to change the speed of bicycle? Do you feel that it's hard to ride your bike? It is time to change the chain. Our chain is easy to install and fine workmanship. You won't be disappointed.Features:Fine material, not easy to rust.High intensity, efficient speed transmission.Built according to standard specifications, closely assembled, the chain is beautiful and practical.The silt can be discharged quickly, not to be accumulated on the chain, to reduce wear.Easy to install and fine workmanship.Specifications:Speed: 6/7/8, 9, 10, 11 (optional)Color: silverItem size: 19 * 6 * 0.6cm / 7.5 * 2.4 * 0.2inItem weight:6/7/8: 314g / 11.1oz9: 287g / 10.1oz10: 269g / 9.5oz11: 256g / 9.0ozPackage size: 22.8 * 8 * 2cm / 9.0 * 3.1 * 0.8inPackage weight:6/7/8: 340g / 12.0oz9: 326g / 11.5oz10: 300g / 10.6oz11: 283g / 10.0ozPackage list:1 * ChainPackage List1 * Chain