Twisted roofing nailSpecs Model:  13G,Website:://.xinyuannails.com,12G,11G,10G,9G,8G Treatment surface: electric galvanizedTechnical Standards: Length:1-3/4"-3" Shank Diameter:2.50mm-4.10mm     Package description:1) According to the buyer's requirment2)7lb/box, 8boxes/carton3) 25kgs/cartonRoofing nails SpecificationSpecificationLength (mm)Shank  diameter(mm)Head diameter(mm)bwg8*2"50.84.1920bwg8*2-1/2"63.54.1920bwg8*3"76.24.1920bwg9*1-1/2"383.7320bwg9*2"50.83.7320bwg9*2-1/2"63.53.7320bwg9*3"76.23.7320bwg10*1-3/4"44.53.3720bwg10*2"50.83.3720bwg10*2-1/2"63.53.3720bwg11*1-1/2"383.0218bwg11*1-3/4"44.53.0218bwg11*2"50.83.0218bwg11*2-1/2"63.53.0218bwg12*1-1/2"382.7418bwg12*1-3/4"44.52.7418bwg12*2"50.82.7418bwg13*1 1/2"382.3815bwg13*1 3/4"44.52.3815bwg13*2"50.82.3815bwg14*1 3/4"402.114