Manufactured from high quality steel, punches are induction hardened which gives durability and extended life even after repeated use The hardness at the stamping end is maintained at 58-62 HRC, which prevents the punch from splintering during use The striking end is tempered to 38-43 HRC and beveled to prevent breakage Contains (27) 3" x 1/4" punches: Letters A through Z and ampersand (&) Shipping Weight: 3.6 lbs.