Product Features Manufactured with high-strength aluminum alloy and CNC processing for ultimate durability. Equipped with front 2 and rear 4 high-precision bearings for reduced friction and enhanced sealing. 36-hole design with an impressive 120 clicks for a smooth ride. Front dimensions: 100*9mm / 100*15mm; Rear dimensions: 135*10mm / 142*12mm. Compatible with 6-bolt disc brakes and supports 7-12 speed cassette freewheels. Specifications Material: Aluminum Alloy Color Options: Black, Red, Colorful Clicks: 120 Type: Mountain Bike, 6 Nails Holes: 36 Sealed Bearing: Front 2 and Rear 4 Compatible Freehub: 7-12 Speed Cassette Cogs Tooth Density: 6 Pawls Brake Type: Disc Brake Front Dimensions: 100*9mm / 100*15mm Rear Dimensions: 135*10mm / 142*12mm End Cap Options: 9mm / 10mm Quick Release, 15mm / 12mm Thru Axle Weight: Quick Release: Approx. 590g; Thru Axle: Approx. 485g Package Includes 1 x Front Hub 1 x Rear Hub 2 x Quick Release 4 x End Cap