Speed Freewheel Cassette Durable Accessory For Mountain Bikes

Feature: \n 1. Constructed of high strength steel, anti-rust, non-deformation, wear-resistant, high performance of durability.\n2. High precision thread ensures close connection with the bike hub and smooth operation.\n3. It can promise smooth rotation of chain without much noise .\n4. Providing fast riding speed with less effort needed.\n5. Reliable to use, applicable to mountain bike freewheel.\u200B \n\nSpecification: \nFeatures:\n\n--\n\nConstructed of high strength steel, anti-rust, non-deformation, wear-resistant, high performance of durability.\n\n--\n\nHigh precision thread ensures close connection with the bike hub and smooth operation.\n\n--\n\nIt can promise smooth rotation of chain without much noise .\n\n--\n\nProviding fast riding speed with less effort needed.\n\n--\n\nReliable to use, applicable to mountain bike freewheel.\n\nSpecification:\n\nMaterial: Stainless steel\n\nWeight: 430g/15.2oz\n\nVariable speed: 7 speed\n\nSize: 11.5 * 11.5cm / 4.5 * 4.5in \n\nPackage L: