This newly developed auxiliary mirror is mounted on top of your ordinary side mirrors . It provides a secondary angle that can be individually adjusted from conventional side mirrors. The auxiliary mirror assures you safer travel. You can see much better as all blind spots are eliminated. Parallel parking has never been easier. Hercules Gurkiewics places at your disposal, 50 years of experience in manufacturing mirrors & accessories for vehicles. They specialize in the production of non-glare, panoramic rear-view mirrors which afford a field of vision up to 2.5 times wider than regular mirrors. Hercules's mirrors, which incorporate German-produced photo-sensitive crystal optics, darken on bright days thereby considerably reducing glare and preventing dizziness. Dimensions: 6-1/4" W X 3" H X 2" D