You need a mark that stays. Asset numbers on dark machinery, serial tags on equipment, safety labels on metal cabinets — white is the colour that reads against dark and mid-tone surfaces without looking like a highlighter was dragged across them. These Staedtler permanent dry marking pencils write a clean white line on glass, metal, wood, leather, stone, plastic and paper. Light fast and waterproof, so it isn't fading by Friday. Round barrel for steady control. Box of 12 keeps the workshop or front office stocked through the month