... . 3)pack:25KG/CTN,7lbs/box,8boxes/carton 4)smooth shank Roofing Nails1) Product name: umbrella head roofing nails 2) Size ... 'X12BWG,2.5'X10BWG,3'X9BWG3) Finish: electronic galvanized 4) Shank: plain or twisted 5) Packing: 25kg/carton, 7lbs/box, 8boxes ... bag or on customers'request. Electro Galvanized Umbrella Head Twisted Shank Roofing Nails(factory,SGS certificate,Soncap)