Letter punches are for marking metals and other solid materials. Produced from quality steel, heat treated to give maximum endurance and accuracy of impression. Packed in attractive plastic box.Select Option 10.0mm 3/8in3.0mm 1/8in4.0mm 5/32in5.0mm 3/16in6.0mm 1/4in8.0mm 5/16in Add to Basket Quantity