Steel Punches make it easy to make holes for rivet installation and similar tasks. Sizes range from tiny to a good size for Chicago screws. They measure 0.5mm,1mm,1.5mm,2mm,2.5mm,3mm,3.5mm,4mm,4.5mm,5mm. The 5mm is 1/5 of an inch.
These are high quality steel punches that will last forever when used properly. We suggest that you use a rubber or nylon hammer to prevent damage to punches, such as our The PERFECT Hammer for Hardware Installation.