3 piece cold chisel set is a top quality set made from chrome vanadium steel for increased strength and durability for cutting and shaping wrought iron cast iron steel brass bronze copper and aluminium and for cutting bolts nuts and rivets contains 1 of each 140 x 10mm 512 x 38in 150 x 13mm 6 x 12in and 170 x 16mm 634 x 58in