Designed for stiffness and comfortare, highly durable and smooth rolling for sustained performance. Sealed cartridge bearings protect the hub's inners from dirt and water.The front hub keeps the wheel spinning freely, and the rear hub allows you to or freewheel.Hub Brake Compability: Suitable for 6- Disc Brake.Axle Type: Thru Axle. Hub Drilling: 36 hole. Intended Use: Mountain Bike.Top screw cap style is random, don't accept the specified style.Colour: blackMaterial: ironPackage Contents:1 Pair * 36 Holes Fron & Rear Disc Brake HubsOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.