Black round handlebar mirror Approved. Plastic head and adjustable stem. There is a second hinge on the stem that allows a deeper adjustment for better vision and safety. The elegant design on the back of the head gives the PONZA mirror a strong visual impact. Usable for left and right side, additional adapter M10 x 1.25 mm included with left thread (for Yamaha models). Dimensions: Head diameter: 101 mm Overall width: 175 mm Overall height: 170 mm Blind hole: M8 x 1.25 mm Adapter: M10 x 1.25 mm Shipping contents: 1 piece including additional adapter - Right thread 1x M10 x 1.25 - Left thread 1x M10 x 1.25