This listing is for a Pre-Greased Trailer Hub for 2,000lb to 2,200lb Trailer Axles. Not only are the Bearings in this Hub pre packed, but high temperature grease has also been chambered within these hubs, for a truly ready to go trailer hub assembly. This particular hub is a Hot Dipped Galvanized 5 Lug hub, with a 5 on 4 1/2 standard lug pattern. This hub outfits a 1 1/16 inch Straight trailer spindle, with a 1 1/4 inch Inner diameter Grease seal surface that is pre-installed as well. This 1 1/4 inch Measurement would be the diameter of your axles grease seal surface. The trailer wheel bearings packed within this Hub measure 1 1/16 inch Inner Diameter, and feature wheel bearing Number 44649. The Grease that is packed within this Hub is high quality, high-temperature Trailer Wheel Bearing Grease, and features superior corrosion control and lubrication.