1、Premium Material: Made of high strength chrome steel alloy, metal alloy and rubber material, the bearing kit ensures durability and rust resistance in harsh environments for long lasting use. 2、Practical Use: The trailer axles bearing kit includes inner bearings, inner races, outer bearings, outer races, grease seals, cotter pins, dust caps, rubber plugs, spindle nuts, and washers for easy replacement. 3、Versatile Application: The boat trailer axles hub bearing kit is ideal for boat trailers with 1.25in to 1.75in tandem axles 5200 to 7000 lb D42 spindle, meeting various mounting needs. 4、Enhanced Performance: The trailer axles hub wheel bearing kit is suitable for refurbishing and replacing old or damaged trailer bearings, providing stable support, reducing hub friction and improving vehicle performance by minimizing resistance. 5、Easy to Install: The trailer axle hub bearings have a simple installation, convenient and effort saving, don't need too much tools or complicated steps.