EXPO 1574 Vis-A-Vis Wet-Erase Overhead Transparency Markers, Chisel Tip, Assorted Colors, 4-Count Ideal for overhead projectors, transparencies, and all other types of films, acetates, and laminated calendars. Won't fade or bubble under intense lamp heat. Versatile chisel tip allows for broad or fine writing. Erases with a damp cloth or tissue. Set of four markers includes black, blue, green, and red. Made in the USA