Personalize pieces made of copper, silver, brass and more and be visible with these metal stamps! Letter and number punches are suitable for marking metals and other hard materials. These punches make big 1 cm (3/8\") high characters. Manufactured from high quality carbon steel with hardened heads to ensure high quality impressions Useful for stamping identification of mating parts, post codes on tools, cycles etc. or name plates Combination letter and punch set includes 36 stamps (27 letters and 9 numbers) Number punch set consist of 9 stamps 0 - 8 (no. 6 is inverted to make no. 9) Letter punch set consist of 27 pieces: A to Z