Made from chrome vanadium steel. Fully drop forged, hardened and tempered. Mirror finish. Complete with heavy duty storage wallet. Includes sizes: 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 30 and 32mm.