Feature 1Constructed of high strength steel, anti-rust, non-deformation, wear-resistant, high performance of durability. 2High precision thread ensures close connection with the bike hub and smooth operation. 3It can promise smooth rotation of chain without much noise . 4Providing fast riding speed with less effort needed. 5Reliable to use, applicable to mountain bike freewheel.SpecificationFeatures: Constructed of high strength steel, anti-rust, non-deformation, wear-resistant, high performance of durability. High precision thread ensures close connection with the bike hub and smooth operation. It can promise smooth rotation of chain without much noise . Providing fast riding speed with less effort needed. Reliable to use, applicable to mountain bike freewheel. Specification: Material: Stainless steel Weight: 430g/15.2oz Variable speed: 7 speed Size: 11.5 * 11.5cm / 4.5 * 4.5in Package List: 1 x Bike Freewheel Set .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; }Note:Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.