NOVATEC D041 D042SB  Hubs MTB Mountain Bike Bead 4 Bearing Disc Brake Hubs 28-32H O.L.D. front 110 mm Rear 135mm QR for SHIMN0 novatec d811sb d812sb ultra light disc brake bearing hub mtb mountain bike bicycle hubs 28 32 holes 28h 32h xc allround