Comes with adapters for handlebar handlebar internal diameter of 12 mm to 21 mm.
Fits left or right, fully returnable.
The EVO versions have a new handle shape and are supplied with a mounting set. The mirrors will fit handlebars with a handlebar inner diameter 12-21 mm. That for most 7.8 "and 1" aluminum or steel bars.
The mirrors can be used right and left, rebuilding only the five M4 screws must be loosened and the intermediate adapter is mounted on the other side.