Highest quality automotive chrome glass. Aerodynamic air balanced head to minimize vibration. Larger diameter arm for enhanced stability. Sprung loaded gripper plate that forms to shape of vehicle mirror. 50% larger mirror pads compared to standard Aero 3 pads. Larger clamp body with increased depth for more versatile and secure fitment. Stainless steel and brass in key areas to prevent corrosion. Enhanced rubberized surfaces on both clamp and pad. Fits all vehicles including Range / Land Rovers, all BMW X series models. 2021 Land Rover Defenders as with the original Defender fits on the bottom of vehicle mirror