Review on 🔪 Efficiently Cut Through Various Diameters with Greenlee 645 001 Diameter Through Cutters by Erick Hernandez

This pilot drill works great. The center mark does not need to be punched. Simply place the center of the pilot drill where you want to drill, hold it and start drilling. I punched a few holes in 18 gauge steel and each one started right where I wanted it with no hesitation or marking, just as advertised.