... 4" 3,Shank: smooth screw Ring 4,Surface: galvanized, vinyl coated 5,Material:201 304 The nails for use in Building,furniture ... coil stylesfalt coil nail /conical coil nail shank stylessmooth , ring , screw ,twist ,thread shank head stylesflat ,brad ,gridding ,roofing,oval ,flat ... are manufacturer which specialize in prodauct of various kinds of nails,our products get good feedback from our clients.best ...