Curved Lower Rear Arms have a 65mm bush with M12 thread Ball Joint. Lower Front Ball Joint has a M12 thread. A5 8T,8F (to 02/11/09). A4 B8 (to 20/07/09). Contents: 8 x Suspension arms, 2 x Tie rod ends, 2 x Anti-roll bar links, 2 x Ball Joints, Fitting kit.