Round R20484X 84 Spindle & 5-4.5" Bolt Circle Trailer Hub. 5 studs 4.5" Bolt circle using L68149 inner and L44649 outer bearing hub. (84 Spindle). Includes Hub, inner bearing, outer bearing, seal, grease cap & lug nuts. Round 84 Spindle, Spindle width =1 1/2" Spindle length=4" Overall length =8 7/8" Capacity (pair) 2,000 lbs. Hubs are cast steel and are not made to be re-drilled or altered. For trailer use only.