Hillman 561044 12-14 X 2-Inch Washer Head Neoprene Washer Self Drilling Roofing Screws, 100-Pack

Self drilling screws designed for power driving wood or metal to metal | Drill point drills its own hole, taps mating threads and fastens firmly in one operation | Steel Backed Neoprene Washer for water proofing | Zinc finish for moderate corrosion protection | No need to pre-drill a hole