The Quadrant Front Wheel features the C5 Front Hub laced to the Quadrant Rim, for a lightweight and affordable option. - C5 Front Hub - 36H, 6061 T-6 aluminum hub shell with 15mm 4130 chromoly female axle - 6902 sealed cartridge bearings - 3/8" heat-treated chromoly axle bolts w/17mm wrench flats and 6mm hex slots - Replaceable plastic hub guards (compatible with Odyssey/G-Sport hubs)