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This is a cassette sprocket for mountain bike, which is adopted the hollow design, with chrome plating surface, no fading. Made of high tensile steel and made by the technology of quench-temper hardening. The strong antioxidation makes it hard to rust, can provides long service life. Easy to control the shift function, due to the special design of the gear sprocket exclusively for mountain bike. There are two types for you to choose, 9 speed and 10 speed, you can choose according to your demands. You can have a try. Features:This cassette is a cassette sprocket for mountain bike.Adopted the hollow design, with chrome plating surface, no fading.Made of high tensile steel and made by the technology of quench-temper hardening.Has higher strength, fine durability and has extreme resistance to abrasion.The strong antioxidation makes it hard to rust, can provides long service life.Easy to control the shift function, due to the special design of the gear sprocket exclusively for mountain bike.There are two types for you to choose, 9 speed and 10 speed, you can choose according to your demands. Specifications:Name: ZTTO MTB CassetteMaterial: steelColor: GoldType: 9 speed, 10 speed (optional)9 speed ratios: 11-13-15-18-21-24-28-32-36T10 speed ratios: 11-13-15-17-19-21-24-28-32-36TItem weight:9 speed: 415g / 0.91lb10 speed: 439g / 0.97lbPackage size: 155 * 155 * 60mm / 6.10 * 6.10 * 2.36inPackage weight:9 speed: 498g / 1.10lb10 speed: 522g / 1.15lb Packing List:1 * CassetteGiá sản phẩm trên Tiki đã bao gồm thuế theo luật hiện hành. Bên cạnh đó, tuỳ vào loại sản phẩm, hình thức và địa chỉ giao hàng mà có thể phát sinh thêm chi phí khác như phí vận chuyển, phụ phí hàng cồng kềnh, thuế nhập khẩu (đối với đơn hàng giao từ nước ngoài có giá trị trên 1 triệu đồng).....