These stamps are precision machined from tool steel. They can be used in hot steel or cold annealed steel. Various sizes are also available. Click the chat button at the bottom of the screen or email us at firstname.lastname@example.org for a quote. Usually ships within a week from ordering. WELDING YOUR OWN HANDLE ON THE STAMP WILL ALTER THE HEAT TREATING AND VOID THE WARRANTY. To add a handle to your stamp, click "Add handle to your stamp."