This is for one 4" round peep mirror with a straight mounting arm.  This convex glass mirror features a polished stainless steel mirror head. The glass is curved to offer a higher range of visibility. Convex mirrors are commonly used on the passenger side but this mirror will work on either side of a car and is fully adjustable. The arm and base are die cast metal with show quality chrome. This comes with a molded rubber gasket and allen tool for installation.