Mirrors suck but this one works.
I know, I know,, mirrors are a true indication of senility and worse, real aged Fred status. However after trashing multiple mirrors I found one that actually works with drop bars. I bought Hafnys bar end mirror, this mirror is 68 mms in diameter and the glass has a blue tint to help with glare. The mirror is easy to install, stays aligned on ****** roads and is large enough to provide a nice and clear field of view of the cars/street. I ride on fast and busy roads and change lanes or turn with the traffic which makes the ability to see the traffic behind a real bonus. If you need a mirror, this one works for me..