Paint markers work on practically any surface and will become a staple in your art supplies. Paint markers are easy to use and help make artist's at every level add detail and depth to artwork or to your craft projects. These permanent markers are streak-free and fast drying. Express yourself with this set of black, white, blue, red and green markers. Medium tip markers work on wood, ceramic, fabric, metal, paper crafts, plastic, glass and terra cotta to name a few ideas! Safe and non-toxic. Plastic. (5 pcs. per unit) Conforms to ASTM D-4236. 5 1/2"