Umbrella -Roofing Nails Tianjin Ruiya Internation St Co., Ltd. Base Info Type：Hexagon HeadMaterial：Carbon SteelHead Style：RoundConnection：Common BoltGrade：12.9Trademark：E-starOrigin：China Mainland Description Pre：Stainless Steel Sintered Metal Fiber Filter Elements Next：Self-Driling Screw (Countersunk Head White)
