twisted roofing nails Twisted shank or smooth shank ,electro galvanized . Specs Model: 13G,12G,11G,10G,9G,8G twisted roofing nailsTwisted shank or smooth shank ,electro galvanized . Specs Model: 13G,12G,11G,10G,9G,8G Technical Standards: Length: 1-3/4"--3"-2.5-2Shank Diameter: 2.50mm-4.10mm Package description: 25kgs/ctn bulk,. 7lb/box and 8boxes/ctn.7lb/box and 16boxes/ctn.,1kg/box and 25boxes/ ...