13″ Rotor and Hub Integral 10k #99 Spindle with 1.9” Inner Bearing shoulder to brake flange measurement. 8 LUG 5/8″ Wheel Studs MAXX COATING (Inner brg 28580 race 28521) and (Outer brg 25580 race 25520) *Bearings not supplied* Accepts 3 3/4″-8 Screw in Cap. Seal# CR27438    50.8 lbs