Sharpie King Size Permanent Marker, Chisel Tip, Black, Dozen. Industrial strength results for the toughest marking jobs. Specially formulated to mark on wet and oily surfaces. Felt chisel tip draws extra wide, highly visible lines on corrugate, wood, metal, foil, stone, plastic and leather. Durable aluminum body and felt tip are tough enough to withstand heavy use. Large ink supply for big projects.