material: carbobon steel Shank: smooth, grooved, sprial, twist surface treatment: electro galvanized We ... factories which produce common wire nail, umbrella roofing nails, coil nail, building nails, screw nail, concrete nail, also we can supply you the ... .2-5 .0 MM2) Length: 1 "- 6"3) Material: Carbon Steel, # 45 steel4) Shank: smooth, grooved, spiral, twist5) Head Diameter: 2 ...