... :Black also polished, electro-galvanized, hot-dipped galvanized3.Nail Head:Countersunk,Checkered head4.Nail point:Diamond Point5.Dia. of shank:BWG4-206.Length ... degree won't breakMaterialC45,C50,C55Treatmentpolish,electro-galv,black,blue, brass coated ,mechanical galvanized ,etc.packaging inner box:100pcs,200g,300g ...