The Heavy Duty Notcher is designed to easily notch 3 and 4 point rule. It can also handle soft crease rule up to 8 point, and tempered steel up to 6 point. Choose between 2-hole or 4-hole female. The 2-hole version is designed to easily notch up to 6 point tempered or 8 point soft crease rule. The 4-hole female allows for notching smaller radius bent rule.