Motorcycle Helmet Mirror (side mounted)

This motorcycle helmet mirror adapter is mounted on the side of the helmet and is designed to fit the following blind spot mirror (the oval one) ...
https://www.amazon.com/gp/product/B082F91C8M/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1
to a motorcycle helmet, with the use of a 4mm x 250mm (~10 inches) carbon fiber rod.

UPDATE 3/23/2024: I replaced my side mounted mirror with a chin mounted flat mirror, which provides a clearer view and isn't prone to vibrating when riding over bumps. The chin mounted mirror is posted at https://www.thingiverse.com/thing:6546807