U-Mark 10881 Black DR. PAINT Extra Broad Tip Paint Marker, 15 mm Tip, 1" Diameter x 6.25" Length, Paint Pen (Pack of 6) DR. Paint makes highly visible, opaque, rain and fade resistant marks on glass, metals, plastics, ceramics, canvas and posters A cost effective way to promote sales and advertising products It is ideal for auto dealers, auctions, restaurants, shops, artists, sport fans and has many hobby and crafts applications Removes from glass with using ammonia based cleaners such as Windex and 409 Made in USA