Complete Control Assembly Arm Pre-Assembled With Bushings, Mounts & Ball Joints (When Applicable) - No additional parts or tools required for installation, TOR exclusive USA-engineered powdered metal gusher bearing design enables grease to flow through the stud for reduced friction and enhanced strength and stability, 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, Premium cover plate design allows for tighter tolerances vs traditional cover plate designs, providing a more durable and extended life for the ball joint, Premium cover plate design allows for tighter tolerances vs traditional cover plate designs, providing a more durable and extended life for the control arm, TOR engineered steel composition (40cr+) results in a stronger component. Our full-ball metal stud provides 36 degrees of smooth, consistent, rotational movement resulting in more responsive steering, 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, TRUE