"Kit Includes: 25580 inner bearing- (1-3/4"" inside dimension), 02475 outer bearing- (1-1/4"" inside dimension), 25520 inner race- (3.265"" outside dimension), 02420 outer race- (2.6875"" outside dimension), Grease seal - (3.38"" O.D ? 2.25"" I.D), Steel Dust cap - (2.725"" outside dimension) This Trailer Bearing Repair Kit includes everything you need to replace the wheel bearings on one trailer brake drum. This kit is for axles with 8K brake drums with grease lube. Here at M-Parts Auto we pride ourselves on offering our customers a one stop shop to find their trailer parts and replacement parts, whether it is a new set of brakes or drums or even replacement leaf springs or hanger kits, rest assured you will be able to reach a live customer representative to help with any questions you may have, please feel free to reach out to us for any questions regarding our product or any business need! We have set he standard and our mark within this industry, we will always pride ourselves in our ability to separate ourselves from our competition!"