Grabber's coarse-thread drywall screws feature super-sharp points and threads for quick penetration into drywall and wood. Grabber'a coarse thread screws are ideal for drywall installation and many other interior wood fastening applications. Phosphate coated for improved paint and mud adhesion. Use a standard screw gun with a depth-sensitive nose piece. Suggested screw gun specification for optimal performance '“ 4 amps minimum and 2500 RPM.