Equip your semi to be Ready for the Road Ahead™, with the NTN 1 9/16" Steel Tapered Roller Bearing Cone, a key component that provides a smooth surface for roller bearings. By utilizing a cone-shaped design, this replacement piece is able to help reduce the amount of friction between two mechanical components. Built with case carburized steel material for improved durability. FleetPride is your First Click in Heavy Duty®.