Ideal ; TKO ; Hole cutter has a hole diameter of 1 Inch and is ideal for cutting ferrous/non-ferrous metal as well as stainless steel. It features carbide tip for long life and SmoothStart ; pilot drill to prevent damage by gradually guiding cutter to material. Cutter has built-in flange to prevent penetration beyond the sheet metal. It has precision ground carbide teeth for clean and fast cutting of round holes. Also known as -Ideal 36-302 TKO Carbide Tipped Hole Cutter 1-Ideal 36-302 TKO&trade Hole Cutter 1.000 Inch Carbide Tip