... 4.2mm(#8),4.8mm(#10) Length: 25mm,35mm,50mm....Coating: Black Phosphated,Grey Phosphated,Zinc,Yellow Zinc,Packing: Rugular ... 2mm(#8),4.8mm(#10) Length: 25mm,35mm,50mm etc....Coating: Black Phosphated,Grey Phosphated,Zinc,Yellow Zinc,Packing: Rugular Collated ... 4 )Thread: Fine or Coarse Thread.Point: Sharp Point, Self-drilling Point.Coating: Black or Gray Phosphated, Zinc Plated, Decromet, Ruspert,Screw ...