Size: 6.4*4.5cm thickness about 3mm Easy to InstallCar blind spot mirror truck installation method: use the mounting bracket to fix the small round mirror and then It must stick to the upper edge of the rear view mirror, not to the lower edge. so that you can adjust the side mirror with 360 degrees. You are able to install and test it within seconds. Practical Design2 Piece packaged, latest upgraded 360 rotation + 30 sway adjustable driver side mirror round, maximize your view with wide-angle in the car to avoid any kind of accident or collision when you change lanes or back your car. At the same time can be used as a passenger-side mirror. Hight Quality2 Inches HD Mirror Glass curved face frameless ultrathin slim design, the side view mirror with High viscosity 3M adhesive for pressure-sensitive tape installation. The convex mirror is made of waterproof, rust-resistant material and the glass will not haze. the passenger side mirror will not fall even you wash the car weekly. installation method: 1. After the location of the paste on the rearview mirror of the vehicle is determined, wipe it clean 2. The fixed type uses the outer large circle tape of the double-sided tape, which is pasted at one time 3. The small circle tape on the back of the small round mirror used for angle adjustment is pasted with the angle adjustment bracket 4. Turn sideways to assist in angle adjustment (use for angle adjustment) Precautions: 1. Please confirm the position before pasting, the double-sided adhesive is strong, and it is not easy to tear off after pasting 2. It is recommended not to wash the car within 24 hours after the small round mirror is installed, so as not to damage the double-sided adhesive 3. When installing, you can press the mirror hard to make it stick more firmly