PN#708521  SKU#13940  5″ Center Mount Convex Mirror, Black. Three Screw. Size: 5″ dia. Mount: Center. Glass: Convex. Color: Black. View: Blind Spot. Radius of Curvature: 12.6″. Material/Color: Black Powder Coat. Note: Center Stud. Three screw ball stud offers secure mounting and easy adjustment. Black gasket holds glass in place.