150mm Stainless Steel Screws Shenzhen Shi Shi Tong Metal Products Co., Ltd. Base Info Material:Stainless SteelType:Hexagon HeadGroove:No SlottedConnection:Common BoltHead Style:HexagonalStandard:DIN, GB, JISGrade:4.8 Description Pre:100mm Stainless Steel Screws Next:20V Max Li-ion Intelligent Automatic Cordless Blind Rivet Tool