RETRAC aerodynamic mirrors are engineered to promote maximum efficiency and safety for heavy-duty trucks. They feature a sleek design to reduce wind resistance and minimize drag. They are also made with an original equipment style to provide a perfect replacement for an existing OEM west coast mirror, maintaining a professional look and offering a fast and easy installation. Aerodynamic mirrors securely mount onto the truck with a universal clamp system. This mirror fits any loop with a diameter of 3/4" to 1-1/4". It provides a generous view, featuring an 8" x 17" area, and it is constructed with first-surface, electro-chrome glass to maximize safety by eliminating glare. The mirror head is built from durable ABS plastic that provides the option of being painted to match the look of the vehicle.