Outdoor Acrylic Traffic Safety Mirrors are durable and designed to withstand tough environmental conditions, such as coastal areas, extreme weather and heavy machinery. The mirror face has a unique curve design to allow a driver to observe high speed traffic much more effectively at a safe distance. These outdoor convex mirrors can be installed anywhere a driver's view of the road is impaired by buildings, trees, fences and other obstructions.  Ideal for concealed entrances or exits, blind corners on roads and highways and for hard to see intersections. The extra strong galvanised steel clamp bracket is designed for fixing to a 75mm pole (pole not included). To attach these outdoor traffic mirrors to a flat surface, a Wall Mount Adaptor is available to purchase.