Review on Enhance Safety with Eleckal Bike Mirror: 2pcs Wide Angle Rear View Mirrors for Mountain & Road Bikes by Michael Hall

Before ordering, carefully measure the end of the handlebar with vernier calipers to ensure it matches the inner diameter of the handlebar. The product description with sizing information on the Revain website is INCORRECT. This does not correspond to such a small inner diameter of the handlebars as stated in the description. Wasted hours of my time between trying to install and 3 attempts to return it through my local Whole Foods for a refund due to QR code confusion. The packaging says it fits the handlebar inner diameter of 18-25mm, and the description on the website says the inner diameter is 14.8-22.5mm. It seems that all sellers selling mirrors of this particular style/brand are misrepresenting the CORRECT mounting dimensions. Also, this item was missing the included 5mm Allen key required for installation.