Daggerz 1/4" x 3-3/4" Self-Drilling Plywood-to-Metal Screw with Wings, Phillips Flat Head - ACQ Dagger Ultra-Guard Coating, Qty. 500Daggerz Self Drilling Metal Screws with Wings are designed to tackle demanding wood to metal applications with speed and precision. These screws feature a sharp self drilling point and winged design that prevents wood splitting and ensures smooth penetration through wood and into steel framing. As the wings snap off upon hitting metal, the screw continues cleanly into the steel without interference or damage to the threads. The ACQ Dagger Pro Coating