A truly universal MTB hub. The Spin Doctor 6F is light but super strong and can be used for all riding disciplines including XC, Trail, Enduro, Freeride and DH.It features large, durable 6804 sealed cartridge bearings and is supplied with the two of most common axle fittings - QR and 15mm thru-axle adapters. A 20mm axle conversion kit is available separately.Want to fit a Boost front fork but don\'t want to change your hub?Now you can, using our Front Boost Adaptor Kit - Part No. HUHAM6FABK. Simply replace your existing end caps with the ones supplied in this kit, bolt on the disc spacer and you\'re good to go!SpecificationsMaterial Forged and CNC machined Aluminium,Drillings 32H, 36H and 48H,Bearings 2 x 6804 sealed cartridge bearings,Disc Mount IS 6-Bolt,Spoke Hole Circle Diameter (PCD) 58mm both sides,spoke hole size (diameter) 2.5mm,Centre to Flange Left: 22mm, Right: 30mm,OLD 100mm QR/15mm,Model Ref SD6F,Colour Black, Red, Blue, Polished or White.