【Number Punch Size】 The alphabet, number and symbol are about 3mm in diameter, letter punch are 6mm wide and 60mm long. 【37Pcs Letter Punch】 3mm letter punch includes 26 uppercase letters A to Z, numbers 0 to 8 (6 and 9 are interchangeable) and symbols '&' and ''. 【Durable Material】 Number and letter punch are made of high quality from high quality iron for strength and hardness. These attributes reduce wear and feel the durability of metal letter and number punches. 【Personalize Letter Punch】 Use letter and number punch kits, personalize your crafts, jewelry, cards, leather decorations, etc. Metal punch is a practical tool set for craft lovers. 【Wide Application】 3mm Number Punch is very suitable for printing on materials such as metals, plastics, leather and wood objects. The surface of the Metal Stamp Set may contain oil to protect it from rust.