3R Blindspot Mirror for Car or Van Adjustable Blind Spot Sector Convex Stick- On Rear View Rear Glass Mirrors (silver) 5.8 cm in diameter, mirror surface diameter of 5 cm Spherical convex to blind spot small round mirror, mirror can make 360 degree adjustment, on the mirror, which can effectively eliminate blind spots expanded field of vision, to ensure driving safety. Materials: chrome plated hardware and plastic casing