Sizes: 17, 19, 20, 21, 22, 23, 24, 27, 30, 31, 32, 33, 34, 35, 36, 37, 38, 40, 41, 45, 46, 48, 50, 54, 55, 57 and 60mm. Hardened and tempered for enhanced durability. Hardened: HRC 45 for durability.
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