These adapters will screw into your 8mm clockwise threaded mirror mounting point and then you will be able to mount the 1mm mirrors.  This is so easy a caveman can do it.

 

Note: If you have a for Yamaha scooter or bike with an 8mm mounting point， these adapters will not work.  For Yamaha uses a counter-clockwise threaded bolt on the right mirror.

Total Length：2.5cm
1mm  thread：1.25mm pitch