Stanley 12 piece punch chisel set stanley 4 18 299 high quality chrome vanadium steel chisels for cutting shaping wrought iron cast iron steel brass bronze copper and aluminium cutting bolts nuts and rivets punches are also made from chrome vanadium steel to precise specifications and are used for marking centre lines hole locations and pilot drill starting points li set of 12 contains li 10 12 and 16mm 3 8 1 2 and 5 8 in cold chisels li 1 5 3 4 5 6 and 8mm 1 16 1 8