Individual Fractional Transfer Punches (Spellmaco) Punches are made from the finest tool steel, carefully heat treated. Induction hardened and tempered to RC 61-63 approximately 1-1/2 inches from point. Tolerance of ±.0005. Punches are 4-7/8 inches long. Sizes from 1/16 inch to 2 inches. Made in USA.