Review on Bike Rearview Mirrors: Adjustable Handlebar End Mount Cycling Side Mirror with Rotatable Bar End, Safe Mirrors for Road & Mountain Bikes + Bonus Bicycle Bell by Brian Manfre

There are beautiful mirrors. Durable and with good clarity. Easy Installation: Simply remove the bar end cap, slide in and tighten with the included hex wrench. I have two mountain bikes that I use as road bikes and I have a mirror on each on the left side. I'm buying a second pair of mirrors as a backup. Because the mirrors are attached to the ends of the handlebars, they can break if the bike falls, which is rare but does happen.