Material:Steel, SS304/ SS304+42A/ SS316/SS410 Size:ST3.5-ST6.3 Mark:According to customer's requirement Package:lastic bag /small box +outer carton +pallets Advantage:OEM Customized Service Provided Finish:ZINC Finish:Plain Finish:Black Oxide Material:Stainless steel Material:Steel Measurement system:INCH Measurement system:Metric Head Style:HEX Standard:DIN7504K