+1 for the Milenco mirrors, distributed by J.R. Products. I searched for these mirrors for a couple years after reading a British mirror test, but couldn't get them shipped to the US. It was clear that the Milencos were head and shoulders above the competition - their aerodynamic design, super strong clips, ease of installation and lack of vibration in the wind was attractive.
I bought the larger Grand Aero from
https://www.makariosrv.com/products/...-Products.html
The mirrors work great and I like the way they fold in with my mirrors so passers-by aren't bumping them out of alighment.
I received excellent response from the distributer, JR Products, who did not sell retail, and Super Sevice from Dennis at Makarios RV. Dennis actually went out and measured how far the Milencos extended from his window glass and reported back to me before I bought! Check them out for other RV products.