The C5 is a lightweight, affordably priced hub designed for durabilityBuilt around proven 3/8` axle bolts, a strong, chromoly female axle and solid sealed cartridge bearingsTwo plastic guards are included15mm 4130 chromoly female axle3/8` heat-treated chromoly axle bolts w/17mm wrench flats and 6mm hex slots6902 sealed cartridge bearings6061 T-6 aluminum hub shellFT36HB/O 3/8AlyBlkRIM10042422828UPC/EAN/GTIN: 630950921225