Grabber bugle head drill point construction screws attach sheathing board to heavy gauge steel. Attaches gypsum, insulation board, wood, etc. to metal studs 20-14 gauge GrabberGard® exterior grade coating provides protection against corrosion. Use a standard screw gun with a depth-sensitive nose piece. Suggested screw gun specification for optimal performance '“ 4 amps minimum and 2500 RPM.