Duncan CCKIT-6 Cover-Coat Opaque Underglaze Cool Colors Paint Set, 12 Best Selling Colors in 2 Ounce Bottles with Free How To Paint Ceramics Book Applied directly to greenware or bisque, Duncan Cover-Coat Opaque Underglazes provide solid coverage over even the darkest colors, and are perfect for airbrushing and brushwork. Cover-Coat Underglazes fire to an opaque, porous matte finish; or apply a clear glaze for brilliantly shiny color coverage. Cover-Coat Underglazes are safe for use on dinnerware when a Duncan food-safe clear glaze is applied over them. For custom colors, tint them with other Cover-Coat colors or Duncan E-Z Stroke Translucent Underglazes. Can be brushed, sponged, spattered, or stenciled onto ceramic bisque. Kiln Fire to cone 06. Made in USA. Kiln required. Includes free How To Paint Creative Hobbies Bisque: Fired Finish Booklet published exclusively by Wholesale Craft Outlet.