Feature: 1. Applicable Diameter: Motorcycle rearview mirrors are suitable for handlebars with an inner diameter of 13 to 18 mm. Please check the inner diameter of the handlebars. 2. Heavy Duty Materials: Frame and stem are made of selected CNC aluminum alloy, the ball socket is made of stainless steel, and the mirror glass is used to expand the field of vision. 3. High Definition: The definition is very good, even with a slight blue tint to reduce glare and protect your eyes. The mirror provides you with a wide field of vision. The mirror should be installed on the handlebar of the motorcycle. 4. Installation: Please tighten the three screws as much as possible, then the rear view mirror rod will remain in the correct direction and will not move during riding, only the rear view mirror will be adjusted to the best angle. 5. Black Plastic Casing: Three black plastic casings with different thicknesses are sturdy and durable to meet your purpose of use. Specification: Item Type: Motorcycle Rearview Mirrors Material: Aluminum alloy + stainless steel + glass Color: Black Product Process: CNC process processing, anti dazzling convex mirror Technical Parameters: Mirror Diameter: Approx. 8.1cm/3.2in Surface: Approx. 8.8cm/3.5in Fitment: Suitable for steering handles with an inner diameter of 13 ~ 18mm / 0.5 ~ 0.7in (thick walled handlebars) and 17 ~ 19mm / 0.7 ~ 0.7in (conventional handlebars). Package List: 1 x Pair of Car mirror (Left and right)1 x Pair of Car Mirror Bracket(Left and right)4 x Mounting Accessories (Black)2 x Bolt1 x Wrench