... )Shank:screw,ring,smooth 3)Finish:Polished/Vinyl Coated/Z.P/H.D.G Artical:Vinyl Coated Coil NailsDiameter:2.0mm-3.3mmMaterial:stainless ... steelShank:screw,ring,smoothModel:Flat,conicalSurface:Polished,Vinyl Coating,Zinc Plated ... offer various coil nails,concrete nail,roofing nail,screw nail. Vinyl Coated ring shank Coil Nail