Grabber drill point drywall screws attach gypsum board to heavy gauge steel. Attaches gypsum, insulation board, wood, etc. to metal studs 20-14 ga. Unique scavenger® head helps reduce paper burrs. Use a standard screw gun with a depth-sensitive nose piece. Suggested screw gun specification for optimal performance - 4 amps minimum and RPM range of 0 to 2,500.