1、Versatile Fit for Various Trailer Axles: 3500LB axle bearing kits are designed to fit trailer axles ranging from 1‑1/16in to 1‑3/8in, fit 84 spindles. 2、Low Noise: 3500LB axle bearing kits are manufactured with precise bearings, ensuring low working noise during operation. This means a quieter and more enjoyable towing experience. 3、Double Lip Grease Seal Design for Leak Prevention: The grease seal included in this kit features a double lip design, providing a tight seal and preventing leaks. 4、Long Service Life: All components of axle bearing kits are made of metal materials. This ensures their durability and long service life, even under heavy use and demanding conditions. 5、Comprehensive Kit: Our kit includes not only the bearings but also dust caps, rubber plugs, and spindle nuts. Additionally, shims and washers are provided.4