They are designed to quickly and securely mount onto ARIES Jeep tube doors and provide a rock-solid view. The high-strength steel construction is specially engineered to prevent rattling and vibration to give you a clear, steady side mirror view. This pair of steel Jeep half door mirrors are uniquely constructed for offroading. Vibrations are one of the biggest problems for Jeep door mirrors, and this pair combats every bump and vibration with a rock-solid steel construction. The brackets are 11-gauge steel, and the mounting plate is 16-gauge. A center-mount ball stud provides a rigid attachment point with the option to tilt and adjust the mirrors as needed.