Aluminum anti-roll bar collars eliminate play through the front side and back anti-roll club wires. Smart design allows the collars become easily taken out of the cable; the 2.8 mm collars fit on wires with diameter of 2.8mm and 3.0mm, is employed with #333441 aluminum collars on NT1 or RX8 automobiles. Set of 2 collars and set screws.