... -250mm 2.Shank diameter:1.0-6.5mm Features:Flat and grid head, round stick, diamond tip, smooth surface, Our company had ... .0-6.5mm Material:Q195 or Q235 Products Features:Flat and grid head, round stick, diamond tip, smooth surface, srangely anti-rusting ... , building, packing of woden case and so on round stick flat head nail