1、Solid Construction: The trailer wheel hub bearings kit is made of premium steel alloy, ensuring high wear resistance for long lasting use in various harsh environments. 2、Complete Kit: Includes 4 x L44643 inner bearings ID 1.000in, 4 x L44610 outer races OD 1.980in, 4 x L44643 outer bearings ID 1.000in, 4 x L44610 outer rings OD 1.980in, 4 x 12192TB oil seals x 4 (1.249 x 1.980 x 0.250in), 4 x cotter pins, 4 x washers. 3、Applicable for 1in 2000‑2200 Lbs Trailer Axle: Specifically designed for boat trailer wheel hub axle bearings, ensuring proper support and reduced friction for improved vehicle efficiency. 4、Refurbishment and Replacement: Ideal for refurbishing or replacing old or damaged boat trailer axle bearings, providing excellent support and reducing hub friction for enhanced vehicle performance. 5、Comprehensive Set: Includes 4 sets with a total of 28 components, suitable for 1in 2000‑2200 Lbs trailer axles, ensuring a complete solution for trailer maintenance and repair needs.