Sharpie professional permanent marker Built tough to stand up on the job. Stronger chisel tip lasts longer than standard. Rubberized barrel will not slip, dent, rust or roll off flat surfaces. Low odor ink is permanent on most surfaces including wet and oily surfaces, sandpaper, concrete, brick, glass, metal, plastic. Nontoxic. Marker Type: Permanent; Assortment: NA; Color(s): Black; Tip Type: Chisel.