Alu anti-roll bar collars remove play from the front and rear anti-roll bar wires. Smart design allows the collars to be easily removed from the wire the 2.8 mm collars fit on wires with diameter of 2.8mm and 3.0mm, must be used with #333441 alu collars on NT1 or RX8 cars. Set of 2 collars and set screws.