... 6" Material: Carbon Steel, # 45 steel Shank: smooth, grooved, spiral, twist Nail factory offer high quality concrete nails Shank ... diameter :1.2-5 .0 MM Length: 1 "- 6" Material: Carbon Steel, # 45 steel ... 2-5 .0 MMLength: 1 "- 6"Material: Carbon Steel, # 45 steelShank: smooth, grooved, spiral, twistHead Diameter ... nail, Bluing concrete nails high quality steel nail