Optical grade acrylic glass mirrors. Simple and classic look, perfect match to most motorcycles. High quality Aluminum light weight material. Swivel head design for easy adjustment. No modification required, easy to install. Two screws on the back of the head allow for precise adjustment of tension, ensuring that the mirror head will be kept firm in place. Main Material: Aluminum Mirror Material: Glass Mirror Diameter: 77mm Fits For: Electric vehicle and Motorcycle with 18mm Handle Bar Package including: 1 x Pair (1 left + 1 right) Rear View Side Mirrors