EXACT™;;; punches and dies can punch holes in both mild and stainless steel material. Their engraved crosshairs deliver clear alignment with pre-drawn crosshairs. The tooth geometry of the punches, and slug removal ports on the dies, provide optimal slug removal. Large size ID markings on both the punches and dies permit easy selection. EXACT™;;; punches and dies do not require spacers. Finally, notches on the punches allow for better grip during punch threading and de-threading. Altogether, EXACT™;;; punches and dies make the knockout process easier!