A drive punch is a tool for punching holes in leather and fabric. It is struck with a mallet on top of a cutting board to cut precisely-sized holes into your work. These drive punches are high-quality steel, and they automatically empty themselves of punched material through the side barrel so there’s never any clogging.
3/32” (size #1, 2.3 mm) - to punch holes in fabric
1/8” (size #2, 3.1 mm) - to punch holes in leather
3/16” (size #6, 4.7 mm) - to punch holes for Chicago Screws