... different application effects.Smooth shank nails are the most popular types, with economic cost due to less cost ... of materials.Twist shank nails are used extensively in post-frame construction due to their superior performance. ... 3/4,2,1-1/2Twisted or Plain 15mmMost Popular is BWG9*2.5"Finish : Electro Galvanized, ... Ctn, 7Lbs x 16Box/Case, Etc.25kgs/CTN in bulk, or inner box, Woodcase ,ect Umbrella Roofing ...