The Teks #12 x 2 in. Metallic Steel Hex Drill Point Roofing Screws (50-Pack) resist corrosion for durability and include self-sealing neoprene washers for convenience. Engineered drill point and flute (pilot section) helps remove material efficiently and sizes the hole for threads. Screws tap their own threads. No pre-drilling necessary. Includes 50-screws with self-sealing neoprene washers.