hex wrench: 1)Material:carbon steel 2)Color:plain.black 3)Size:20-140mm hex wrench :1.Material:steel(1022,1006,10B21),stainless steel,2..Surface:zinc(white,blue,yellow,black),plain3.Size:It's up to the clients4.Packing:plastic+carton or box+carton5.MOQ:100000 pcsFeature :♦ High tensile strength . Hex wrench part of tensile strength can arrive 800 M/Pa even without quenching after taking shape . ♦ ...