Also called magnetic drills or mag drills

a patented T25 6-Lobe drive design for a secure connection and easier installation

3 Head provides maximum strength while the zinc plating prevents corrosion

Automatically deburrs top side of hole

3/4-16 x 4 1/2 L9 Hex Cap Screw Yellow Zinc Plated Domestic USA (80)

3-7/16" Carbide Tipped Hole Cutter, 1" Depth of Cut, CTH3437 1-8 Grade 5 Hex Cap Screws Plain - Domestic USA Also called magnetic drills orWorks like an annular cutter, except no magnetic drill needed! Carbide tipped hole cutters are good for cutting stainless steel, cast iron, iron, sheet metal and copper. It also works well with abrasive materials like high density resin and metal plates. Has auto ejecting slug and can cut over 300 holes in stainless steel plate. Comes with Pilot Drill and Hex Key.