You know how easy it is to overdrive a screw and drive it too deep, especially when working with MDF or particleboard! The PowerHead Screw's unique design completely eliminates this problem, while offering two installation options. Above the surface: Drill the PowerHead into position so that the entire head sits on the surface of your material. Below the surface: The PowerHead Screw has been engineered with nibs underneath the large 9/16" head to cut through your material and allow your screw to sit perfectly flush with the material surface (use an impact drill driver). A type 17, self-drilling auger point allows these screws to be driven into most woods without a pilot hole, and wide threads provide greater holding power. #10 gauge; black oxide coating.