1Premium Material: Applicable for 11/16in to 13/8in Trailer Axles 3500lb 84 Spindle, made of steel bearings, ensuring high wear resistance for long lasting use in various harsh conditions. 2Complete Set: Includes L68149 Inner Bearing x 2, L68111 Outer Race x 2, L44649 Inner Bearing x 2, L44610 Outer Race x 2, 171255TB Seal x 2 (1.719in inner diameter, 2.565in outer diameter), Cotter Pin x 2, Dust Cover x 2. 3Easy Installation: Designed for refurbishing and replacing old or damaged trailer axles, providing excellent support for the spindle to reduce hub friction, decrease resistance between towing vehicle and trailer. 4Wide Compatibility: Fits for 11/16in to 13/8in Trailer Axles 3500lb 84 Spindle, suitable for various trailer axles and ideal for maintenance or upgrade applications. 5Enhanced Performance: The axle bearing kit offers outstanding support for the spindle, reducing hub friction and improving vehicle efficiency, providing a smoother towing experience for your trailer. 2 xTrailerWheelHubBearingsKit (16 Accessory)