Yellow on dark metal. Yellow on black plastic. Yellow on a wood crate in a dim storeroom. You need a mark that's visible from across the room and isn't going to fade or wash off. These Staedtler permanent dry marking pencils lay down a high-visibility yellow line on glass, metal, wood, leather, stone, plastic and paper. Light fast and waterproof, so it holds through humidity, handling and the odd hose-down. Round barrel gives you a firm grip for neat, legible tags. Box of 12 means nobody's reaching over your shoulder asking to borrow a pencil
