TQ metal bearing design enables grease to flow through the bearing to the stud for reduced friction and enhanced strength and stability, TQ powdered metal gusher bearing design enables grease to flow through 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 control arm, Premium cover plate design allows for tighter tolerances vs traditional cover plate designs, providing a more durable and extended life for the ball joint, TQ steel composition results in a stronger component, TQ engineered steel composition results in a stronger component. Our full-ball metal stud provides smooth, consistent, rotational movement resulting in more responsive steering, Our full-ball metal stud provides smooth, consistent, rotational movement resulting in more responsive steering, Kit Includes: 2x Front Upper Suspension Control Arm and Ball Joint Assembly (Both Side) + 2x Front Lower Suspension Ball Joint (Both Side), Kit Variations: K72-100588