... .50 BWG: 4-20Material:ironShank: plain, smooth, twistedFinish: bright, elcctronic galvanized, flat head, diamond pointPackage description:1.According to the buyer ... , 3.125kgs in a box.we are the manufacturer of nails in the north of China,also can supply you with ... , waiting for your enquiry and cooperation later, thank you. roofing nails