Teks #9 x 1 in. Fine Steel Hex-Head Sharp Point Roofing Screws (120-Pack) provide secure metal-to-wood fastening with strong holding power, without the need to pre-drill. The sharp self-piercing point is ideal for fastening corrugated roofing panels to wood structures. A self-sealing neoprene washer provides a waterproof seal and a premium finish provides exceptional corrosion resistance in harsh outdoor environments. Installs with a standard screw gun and a 1/4 in. hex drive bit.