Centurys Cold Marking Chalk is industrial grade chalk for marking on any surface. The chalk has an ergonomic design which makes it easy to hold & write. It can mark on any surface like glass, metal, plastic, concrete, paper, rubber, wood etc. The markings made are bright, fade proof & water-proof. They wont not chip or peel off easily & are UV resistant. The formulation has a superior marking performance compared to other chalks and works on oily, greasy, smooth, cold, rough & even wet surfaces.