3/4 inch Carbide-Tipped Hole Cutter. Strong, durable one-piece construction for even longer life. Split-Point Cobalt Steel Pilot Drill with step design for fast, accurate cutting with less force. Tungsten Carbide Teeth optimized design for fast, easy cutting and maximum life in stainless steel no oil required. Flange Stop eliminates over-drilling. Slug Ejector Spring quick, easy slug removal. Cuts round, burr-free holes.