Thin profile drop-forged hardened and tempered chrome vanadium steel. Fully polished. 6-32mm sizes in a tough nylon storage roll.
Metric 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.