Blace Concrete Nails Anping Jincheng Metal Products Co., Ltd. (Shijiazhuang Office) Base Info Model NO.：JC-N20Standard：GBType：Concrete Nail, Round HeadMaterial：Carbon SteelConnection：Common BoltHead Style：RoundGrade：4.6 Description Pre：Yh R32s Self Drilling Rock Bolt Next：Steel Flange, Compact Flanges 1/2inch - 48inch, and 150# to 2500# with A182 / F51 / Inconel 625.
