Stainless steel 350x450mm square curved mirror. The width of the mounting post supports from 34mm to 50.8mm in diameter. Small and light weight, can be installed in just a few spaces. Eliminates dangerous blind spots when entering or exiting your vehicle. In addition, it can be used to prevent accidents and injuries in various places, such as bending corners of pathways where the machine cannot be seen, and the back side of the machine is not visible. The mounting hardware is designed to fit column diameter from 34mm to 50.8mm. Can be installed directly on single pipe (1.9 inches (48.6 mm)). Comes with wall mounting hardware, so you can mount it to the wall (wood).(Please prepare the necessary components for installation such as anchors and bolts.You can install the hardware and adjust the angle with a single 0.5 inch (13 mm) (M8). Made of stainless steel for long life and high precision.Reflectivity and distortion are in line with road reflector certified standards. Precision pressed and special polishing process to create a precise mirror