Quick Release 1/4" Hex Shank With Taper Point, Includes High-Speed Steel (HSS) M2 DIN 338 Fully Ground Drill Drill pilot hole and tapered countersink for wood screws. The 2-flute integral design ensures uniform and concentric results each and every time. Carbide-tipped for long lasting results.Excellent for Drilling:Natural WoodsMan-Made BoardsMDFChipboardPlywoodAluminum/Non-Ferrous*Aluminum Composite Materials (ACM)*Composite Decking Materials*WARNING!: For optimal results and extended tool life use lubricant or air cooling. Ensure the material is fixed and drill is stable while drilling.