Features： 1、Enhanced Structures: The bearings are made of high grade cr steel alloy, which is resistant to wear and damage, ensuring long lifespan in harsh conditions. 2、Grease Retention Design: Spring behind the lip helps retain grease inside the hub, protecting against water and road grime ingress for extended durability. 3、Efficient Axle Support: Kit includes LM12749, LM12710, L68149, L68110 bearings and TB seal for outstanding spindle support, reducing hub friction and enhancing vehicle efficiency. 4、Ideal Replacement: Suitable for specific sizes of axles trailer wheel hub bearing, ideal for rebuilding or replacing old or damaged trailer bearings effectively. 5、Easy Installation: Designed with user convenience in mind, our marine trailer bearing kit is easy to install, saving you time and effort, bring you reliable use. Specification： Item Type: Trailer Wheel Hub Bearing Kit Material: Cr steel alloy + steel alloy + rubber Kit Includes: 1 Pieces LM12749 Bearings 0.8656 Inch Inside Dimension 1 Pieces LM12710 Bearings 1.781 Inch Outside Dimension 1 Pieces L68149 Bearings 1.378 Inch Inside Dimension 1 Pieces L68110 Bearings 2.328 Inch Outside Dimension 1 Pieces TB Seal ID 1.687 inches X OD 2.328 inches Fitment: Fit for 1-1/16in Axles Trailer Wheel Hub Bearing Package List： 1 x Boat Trailer Wheel Bearing Kit (5PCS)