For big tough jobs, choose the popular Solid Marker. It marks through oil, grease, rust, mud, snow - inside or outside. It is absolutely permanent. Solid markers won&＃39;t fade or wash off like chalk. The special "stay fresh" twist top keeps paint fresh and ready to use.Used by divers to mark things underwater.Used on construction sites to label anything exposed to the weather.Used by auto recyclers to mark sheet metal, auto parts, windows.Applications: Steel, Rubber, Cloth, Plastic, Cardboard, Wood, Glass, Concrete, Stencil Craft projects.Colors available: White, Black, Blue, Red, Green, Purple, Orange, Yellow.Also available in Fluorescent Pink, Orange and Yellow.Packed in boxes of 12 markers but sold individuallyWorking temperature range: 14� to 392� (-10� to 200�) 13 mm wide mark can be trimmed with knife for smaller marks.