The adapter fits perfectly to my 2000 BMW F650GS.
The mirror holds firmly, it is possible to quickly pull out the mirror, for example, when transporting the motorcycle.
I recommend the product.
With such purchases, the description should be more precise. There are different threads in different motorcycles at the mirrors /1.25 or 1.5 /.Lack of description caused the purchase was not good and the goods are useless.