Update your semi with proper alignment and reduced component wear, with the National Bearings 3.54" Tapered Inner Wheel Bearing Cone for 19K-22.5K Trailer that ensures you're Ready for the Road Ahead™. Due to its specialized design that features a low-friction spinning method, this replacement bearing is able to distribute the applied weight from various components. Constructed with a smooth metal assembly to reduce noise and excessive wear. FleetPride is your First Click in Heavy Duty®.