ImpressArt Stamp Straight Tape is a quick and easy way to line up letter punch, number punch and design punch designs for a straighter, more professional finish. The tape is applied directly onto your metal, using the top edge of the tape as a guide for where you would like the bottom edge of your design. Place your chosen metal stamp on the metal and lightly drag it down until you feel the bottom of the punch catch the edge of your tape. Hold in the punch in place and stamp. Repeating this for each letter will result in all of your letters lining up perfectly. The tape can also be used with a ruler and a pen to measure and mark an evenly sized space for each letter.