Dont get stranded again without the right parts! Or maybe your just looking to replace old bearings on a recently purchased trailer. This bearing kit outfits 6 Bolt Hubs for boat and utility trailers. This Bearing kit includes inner and outer bearings, races, two different sized seals, and cotter key. Inner Bearing Number 25580 for Race Number 25520 Outer Bearing Number 15123 for Race Number 15245 Seal Inner Diameters are 2.125 and 2.25 inches Two seals are included with this bearing kit, you will only use one of the seals depending on the size of the seal surface on your axle. Test each seal before installing to ensure you use the right one. Seal Outer diameter on both 3.376 inches Includes Zinc Plated Cotter Key Fits 5200 - 6000 pound 6 Bolt Axles