Mounting a mirror on a drop bar equipped bike can be a bit tough - especially when using bar end shifters. I found these Blackburn mirrors that attach over the brake hood. Compared to the B&M mirrors on my bents the Blackburn is crude and not as pleasing to use. However, it is annoyingly easy to install/remove and works well enough - kind of like the K car of mirrors. I've considered mounting a B&M mirror, but they require tools to install/remove which is a pain and I haven't found a spot to mount them where they aren't in my way while riding. Since I am not a fan of helmet/sunglass mounted mirrors I guess I'll have to stick with what I have.