Excellent for marking most surfaces metal, rubber, wood, glass/porcelain, plastic and garden. Less than 200 ppm total halogens means below industry standard for low. corrosion requirements. Quick drying time. Longer life from superior. Write out and tough acrylic fiber nib. Top performance on many surfaces, especially stainless steel. Available in 7 colors. 2.3 mm durable acrylic fiber tip, bullet style.