... :1.Material:Q195 or 2352.Surface:Black also polished, electro-galvanized, hot-dipped galvanized3.Nail Head:Countersunk,Checkered head4.Nail point ... 't breakMaterialC45,C50,C55Treatmentpolish,electro-galv,black,blue, brass coated ,mechanical galvanized ,etc.packaging inner box:100pcs,200g,300g,450g,500g,1kg ...