Milenco Aero Mirror Pads, these are the standard pads that come with your Aero 3 or Grand Aero 3 Mirrors. Aero 3 Mirror pads will also fit Aero 1 and Aero 2 Mirrors. If you already have Aero 3 or 4 mirrors, you can improve the grip on some vehicles by purchasing alternative pads. If you have Aero 1 or 2 mirrors, you will need to replace your clamps with new Aero clamps 4589, or upgrade to the Platinum range. Platinum mirrors do not require any additional parts. Please Note: Only fit 1 clamp at a time holding the clamp at about a 30 deg angle with the gripper pad canted forwards so that the blade in the pad inserts into the slot in the top of the mirrors. They give an enhanced grip by keying in to the gap on the vehicle mirror. An amount of mechanical dexterity and sympathy is required to ensure precise engagement. Once both clamps are correctly fitted insert the bar.