I have those mirrors....LOVE 'EM...love 'em, love 'em !!!! You can actually see behind, not just a view of elbows and shoulders! As said below, once installed correctly they are stable, stay in adjustment, and don't vibrate...
I prefer the clear lenses....some like the blue tinted ones...
Slight mod needed (to the mirror mount, not the bike) needed to get a pro install.
I make a notch on the mirror side to coincide with the notch inside the handle bars...this way they cannot rotate once snugged down. The 1/2 washer may work just as well...either method can be returned to stock as the mod is to the mirror side, not the bike side.
BTW somebody here said that the bar end weights are removable.....this is true for the GT650 which has clip on bars, but not true for the INT650...the bar end weights are welded in. But they have the threads necessary for install of the bar end mirror....so you don't want to remove anyway...
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https://www.amazon.com/gp/product/B07NYQ834N/ref=ppx_yo_dt_b_asin_title_o05_s00?ie=UTF8&psc=1
These are about $40USD / barley add any width / sturdy, no vibration
I saw a tip from another member regarding installation; I left the OEM threaded plug (inside the handlebar) as is. I got a longer bolt. As for the "notched" plug that locks and locates the RE bar end cap, I took one flat washer and cut it in half so as to level the surface. That way I can return to stock.