MINItrack clip screw is a 1-piece 1" Phillips #2 stainless steel screw with specially designed clip head . Screw attaches to wood framing of your porch and the MINItrack aluminum framing snaps over clip head of screw, securing system framing to your porch resulting in 100% hidden fasteners which will not rust. For use with MINItrack model No. MT6W, MT8W, MT6B, and MT8B. Comes 100 per bag. No. MTCLIPSCREW100: Type: Clip Head, Phillips #2, Length: 1", Material: Stainless Steel