Product description Timken Bearing Sets are engineered for minimal rotational weight through lightweight materials and compact design. These bearing are made of high-quality steel which resists fatigue failure. They maintain proper oil clearance and increases efficiency with minimal friction. The Timken️ wheel bearing cone and cup sets are designed to meet or exceed original equipment manufacturer's specifications. All bearings and cones are made from quality Timken certified steel and feature original equipment technology that optimizes bearing performance and lengthens maintenance intervals. Timken Trailer Bearing Set Specifications: Wheel Bearing cone #L44649: I.D.= 1.0625" W= 0.5600" Wheel Bearing cup #L44610: O.D.= 1.9800" Brand: Timken MPN: SET4 MADE IN USA SAME DAY SHIPPING!!!