The Milenco Mirror Protectors x 2 (White) Long Arm have been engineered and designed to provide the best protection yet! Not only does it conform to all vehicle safety standards, but it also utilises a screw-on clamp to ensure a safe and secure fit! The multi-layer design of the Milenco Mirror Protectors x 2 (White) Long Arm has the shell thickness up to 6mm thick in areas most commonly subject to impact. The ribbed form (patent pending) outer edges to introduce an additional three layers of protection, meaning it deflects impacting objects to offer improved performance, as well as having improved protection to the side indicator the impact performance has been upgraded in order to decelerate the impact forces to better protect the vehicle mirror!