The mirror is a Mirrorcycle brand. It connects under the hoods of 9 speed Shimano brifters. It works pretty well with not that much vibration. However, the knob that it mounts on snapped off and it is no longer on that bike. I know they are now available for 10 speed and maybe 11 speed. I have another one of the same brand that is for bar end mounting. It is a bit harder to get it focused properly without it being in the way of the hand or blocked by the arm. Also, a bit harder to use visually due to location. I have an old Roadgear that mounts on the hood of brake lever/brifter hoods with a velcro strap that is my favorite mirror. They are no longer made. I did find a couple of them on Ebay but expensive, around $70.