Contains 5/16", 5/8", 3/4" cold chisels; 1/16", 1/8", 5/32", 3/16", 1/4", 5/16" pin punch; 1/4" center punch; 3/8" prick punch; and 7" scratch awl. Scratch awl ideal for starting screw holes. Cold chisels used for cutting and shaping metal that is softer than the cutting edge. Pin punches are used to remove a pin or key. Center punches are used for making accurate hole starting easier. Prick punches are used to mark and scribe work pieces.