TOR exclusive USA-engineered powdered metal gusher bearing design enables grease to flow through the bearing to the stud for reduced friction and enhanced strength and stability, Complete Control Assembly Arm Pre-Assembled With Bushings, Mounts & Ball Joints (When Applicable) - No additional parts or tools required for installation, Premium cover plate design allows for tighter tolerances vs traditional cover plate designs, providing a more durable and extended life for the link kit, TOR exclusive USA-engineered metal bearing design enables grease to flow through the bearing to the stud for reduced friction and enhanced strength and stability, TOR engineered steel composition results in a stronger component. Our full-ball metal stud provides 36 degrees of smooth, consistent, rotational movement resulting in more responsive steering, Premium cover plate design allows for tighter tolerances vs traditional cover plate designs, providing a more durable and extended life for the control arm, Full O.E. socket design with self-adjusting internal tension spring and high-strength polymer bearing, TRUE