Markal B Paintstik Solid Paint Marker is a solid paint marker used for marking on any material or ambient surface. It is a lead-free paint in stick form which combines long-lasting durability of paint with ease-of-use of a crayon. Used on metal, wood, plastic, concrete, rubber, glass, cardboard and paper. Can mark on smooth, rough, rusty or dirty surfaces and also marks through oil and water. This solid paint marker eliminates replacement tips, sharpening or priming which increases productivity. Industry uses include tire repair and retreading; lumber and timber industry; construction; steel mills and warehouses; forge and casting foundries; ship building and repair and metal fabrication. On each marker it shows marking temperature range of -50°F to 150°F.