TRADES-MARKER has the marking versatility of a paper-wrapped grease pencil combined with simple push-button advance that helps reduce cost and waste. This refillable, all-surface marker leaves a wear-resistant mark and is safe for all surfaces. Typical application includes: metal, copper, PVC, rubber, glass, ceramics, granite, stone, tile, plastic, wood, paper, fabrication and identification purposes. Handy pocket clip keeps it in your pocket.