The screw diameter of Sanyang Jiumei rearview mirror is 8mm or 10mm.

Generally, the diameter of motorcycle rearview mirror screws is between 8- 10mm, Sanyang Jiumei is a large pedal model, and the diameter of the screws used should be 10mm.

Sanyang Jiumei refers to Sanyang joymax z300, which is a large pedal model.