About Blackburn Multi MirrorLightweight and durable. With a smart universal mounting system, the multi-mirror works with many different handlebars by wedging into the ends of your bars. FeaturesLightweight: This thing is wispy and lean, so as to not burden you or your ride. Tool-Free Installation: Secure, tool-free mount fits 22.2mm to 34.9mm with adjustable angle. SpecificationsWeight 118 grams About BlackburnIn 1975, Jim Blackburn looked at the at the emerging cycling culture and knew he could make a difference. That meant thinking from the user's perspective, showing respect for materials and their functionality, while bringing unprecedented innovation. Over the years, they've taken those principles to build gear that allow people to go further, do more and be prepared for anything.