A Chrome Door Edge 4" Peep Mirror adds style and extra rear visibility to your truck. Attaches to the left or right side of the outer edge on the door window frame. A Chrome Convex 4" Peep Mirror provides a wider field of view than flat mirrors. A Chrome Peep Mirror Extension is available separately and adds 1-1/2" of length to the mirror arm for increased visibility. Reduce glare with a stainless steel 4" Peep Mirror Visor; sold separately.