SUITABLE FOR-Our bicycle mirrors for handlebars fit flat bars with an inner diameter of 0.71-0.86 inch(18-22mm) at the bar end.So please measure your bike handlebar aperture in advance before purchg.NOTE:DOSEN'T FIT DROP BARS. WELL MOUNTED IN MINUTES - Only needs 3 steps to install this bicycle mirror:1.Insert the expansion plug frame into the handlebar hole;2.Using the hex wrench in the package to tighten, and adjust mirrors to desired position;?3.Remove the protective film on bike mirror ensures clear view on the road. HIGH QUALITY&DURABLE - Hopene bike rear view mirror at bar end is made of high quality ABS plastic,sturdy and durable.What’s more,the nylon resin material can protect the bike mirror from cracking. BLAST-RESISTANT & 360° ADJUSTABLE - The handlebar mirror for bike made of premium resin material featured with blast-resistant.The bike rearview mirror can be rotated 360° so that could be adjusted any direction to help you watch every direction of your back.Hopene bike mirrors handlebar rearview mirror is a game changer for riding. HD&MORE SAFETY - HOPENE bike mirrors for handlebars with convex mirror designs for a more wide field vision,which provides you HD visuals of the road conditions behind you to help keep you safe from road accidents.The mirrors can be mounted on electric bike,city bike,mountain bike etc.Lift Type: Manual. Fit Type: Bicycle with 0.71''-0.87''. Special Feature: ?, HD mirror Blast resistant, Convex mirror. Mounting Type: Handlebar Mount. Color: Black. Vehicle Service Type: bike with 18-22mm bar end opening, e bike, Bicycle. Brand: HOPENE. Material: Abs,Plastic,Resin,Nylon. Lens Curvature Description: Convex. Position: Left, Right. Date First Available: May 28, 2021. Best Sellers Rank: #20,880 in Sports & Outdoors. Customer Reviews: 4.1 out of 5 stars 521 ratings 4.1 out of 5 stars. : B0962XTXF2. Special Features: , HD mirror Blast resistant, Convex mirror. Manufacturer Part Number: ?HP-CJ2. Package Dimensions: ?4.72 x 4.13 x 2.05 inches. Item Weight: ?6.4 ounces. Manufacturer: ?HOPENE. Shape: ?Round. Lift Type: ?Manual. Fit Type: ?Bicycle with 0.71''-0.87''. Special Feature: , HD mirror Blast resistant, Convex mirror. Mounting Type: ?Handlebar Mount. Color: ?Black. Vehicle Service Type: ?bike with 18-22mm bar end opening, e bike, Bicycle. Brand: ?HOPENE. Material: ?Abs,Plastic,Resin,Nylon. Lens Curvature Description: ?Convex. Position: ?Left, Right.