The Nissen Low Chloride Metal Marker was specifically designed to safely mark metals which are attacked by halogens and low melting metallic"s. It will not impart contaminants that could cause cracking or weakening of the metal, especially with heat applications such as welding or cutting. Marks on rough, smooth, wet, oily or dry surfaces. Marks withstand heat and weathering; they won"t chip, peel, fade or rub-off. Meets most specifications for Stainless Steel and nuclear components. Independent Laboratory Certifications of Analysis are available and traceable to each marker. Green bright, high-gloss color. 3/16" point size.