Installing mirrors with adaptors on Vespa LX 150

I'm a little confused.  I ordered Part #PI020404 (left mirror) and Part #PI020405 (right mirror) for my Vespa LX 150, as well as (2) Part #MV304046 (mirror adaptors).  The Vespa LX 150 is listed on the Mirror Adaptor product page as being compatible with the Vespa LX 150.

See attached for what I received.  The mirror has a threaded bolt (2 sizes), the adaptors have threaded bolts on both sides, and on the scooter I have a threaded hole which is larger than the adaptor threads.

How should I put this together?

Thanks for any help!