1、PREMIUM MATERIAL: The axle trailer wheel hub kit is made of steel alloy. This ensures high wear resistant, allowing the wheel hub to function effectively in various harsh environments. 2、QUIET AND FAST: The wheel hubs ensure quiet rotation at high speeds due to their robust nature. Stamped steel cage keep the rollers evenly spaced, reducing friction, vibration, and noise. 3、GREASE PROTECTIVE: The reinforced spring behind the lip assists in retaining grease within the wheel hub. This feature also aids in preventing water and road dirt from infiltrating the hub. 4、EFFICIENT PERFORMANCE: Suitable for rebuilding and replacing old or damaged trailer axles, the new bearing kit offers excellent spindle support, reducing friction, and increasing vehicle efficiency. 5、WIDE APPLICABILITY: The axle bearing kit is suitable for 6000 to 7000lbs trailer axles. It fits a diverse range of practical applications without compromising on performance.