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 ... /box and 16boxes/ctn.,1kg/box and 25boxes/ctn. twisted roofing nails factory