Item Type: Bike Rear View MirrorMaterial: Stainless Steel, Nylon Resin, Aluminum AlloyRearview Mirror Diameter: Approx. 68mm / 2.7inApplicable Inner Diameter: Approx. 14.8-23mm / 0.6-0.9in 1SPECIFICATIONS: The bike rearview mirror with a diameter of 68mm, suitable for mounting on the handlebars with an inner diameter of 14.8?23mm. 2ANGLE ROTATION: The rearview mirror supports 360 degrees rotation and 180 degrees pitch, which makes it easy to observe all directions behind. 3EASY INSTALLATION: Just loosen the screw, fix the mirror on the handlebar, and then tighten the screw, convenient for installation and replacement. 4NYLON RESIN: The bike rearview mirror body is made of nylon resin, which has good toughness, wear resistance and high temperature resistance. 5STAINLESS STEEL: The stainless steel convex mirror design ensures wider vision and safe riding, which is rust resistant and corrosion resistant.