Description: - Made of aluminum alloy material, durable and lightweight. - Bike brakes hubs, disc brake commonly used. - 32 holes/36 holes disc brake , with quick release skewers. - Low-friction seals effectively shut , mud and . - Compatible with 5, 6, 7, 8, flywheel.Specification: - Material: Aluminum Alloy - Spoke Holes:36 Hole - Front Hub: 100mm/3.94inch - Rear Hub: 135mm/5.3inch - Braking System: Disc BrakePackage Includes:1 Piece Front Hub1 Piece Rear Hub1 Piece Front Quick Release Skewers1 Piece Rear Quick Release SkewersNote:Please allow slightly difference due to manual measurement. Color may be slightly different since different monitor. Thanks!