100% Brand new and high quality.Easy to install, reliable quality that guarantees stable and excellent performance.This product is made of high quality material, firm and durable.The anodizing process ensures that the product is exquisite and does not fade.Strict quality control standards to build and test.Speed: 8 9 10 11 speed chain.Fit for: 110 BCD CrankSuitable for:road bicyclecolour: red/blackMaterial: AL 6061 aluminum alloyPackage Contents:1 x 34T crankset1 x 50T cranksetOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.