Hub is designed for use on axles with agricultural applications. Fits 6,000-lb axles. Inner bearing (506849) and race, outer bearing (501349) and race, grease seal, grease cap, and lug nuts are included.Features: Trailer hub assembly fits idler axles Hub is for agricultural applications Agricultural hubs are designed for low speed applications, so the load capacity is based on 20 mph maximum speed Grease seal, grease cap, bearings, and (8) 5/8"-18 lug nuts are included - races installed in hub For use on spindle part #AS6000F Yellow zinc finish on wheel studs, lug nuts and grease cap help resist corrosion Specs: Application: 6,000-lb trailer axles with agricultural applications Bolt pattern: 8 on 8" Weight capacity: 3,000 lbs Hub diameter: 9-5/8" Pilot hole diameter: 6.0" Bearing, Race, and Seal Information Bearings: Inner bearing: 506849 (2.165" inner diameter) Outer bearing: 501349 (1.625" inner diameter) Races: Inner race: 506810 Outer race: LM501310 Grease seal: SL275 Inner diameter: 2.75" Outer diameter: 3.75"