Features17075 aluminum alloy ensures stiffness and durability. 2CNC machining secures exact size to fit the bike frame ly. 3Great replacement rear hub thru axle for mountain bikes. 41.5mm pitch thread: 12x162mm, 12x165mm, 12x171mm. 5Special groups: 12x168mm (1.0x19mm pitch thread); 12x175mm (1.75x19mm pitch thread); 12x177mm with cap (1.5x19mm pitch thread).SpecificationFeatures:7075 aluminum alloy ensures stiffness and durability.CNC machining secures exact size to fit the bike frame ly.Great replacement rear hub thru axle for mountain bikes.1.5mm pitch thread: 12x162mm, 12x165mm, 12x171mm.Special groups: 12x168mm (1.0x19mm pitch thread); 12x175mm (1.75x19mm pitch thread); 12x177mm with cap (1.5x19mm pitch thread).Specifications:Material: 7075 Aluminum alloyWeight: Approx. 50gPackage List:1 * Thru AxlePackage List1 * Thru Axle