This letter and number punch set has an advantage over regular punches — it has a spring-loaded brass handle, so you don't need a mallet to "punch" the wood.
After inserting the hardened steel 1/4" hex shank into the handle, simply adjust the amount of tension/impact needed to mark wood or annealed steel, position, and press down to mark. As hard and soft woods mark differently, we recommend testing the tension before finally marking the project.
Set contains a handle, 26 letters, 9 numbers, ampersand, decimal, and a plastic storage case. The impressions are 4mm high by 3.5mm wide. Easy to use.