... )Diameter : 8BWG---12BWG. 2)Length:1.5"--4". 3)Finish :roofing nails with umbralla ,smooth shank or twisted s Roofing ... 1)Diameter : 8BWG---12BWG.2)Length:1.5"--4".3)Finish :roofing nails with umbralla ,smooth shank or twisted shank , ... dipped galvanized, bright4)Model: Common nails, Roofing nails, Book nails,Square boat nails,Duplex Head Nails,Finishing nails,Coil Nails,Cement Nail,U-shade Nail, etc ...