... .Material:Gr2 2.Finish:Polishing titanium washer--titanium fasteners-DIN125 M12: titanium washer Item NameTitanium FastenerMaterialPure Titanium and Alloy TitaniumGradeGr1,Gr2,Gr3 ... , excellent mechanical strength etc.ApplicationsEquipment accessories: airplane, ship, bicycle, motorcycle, auto, medical, chemical, wheelchair, sports, anchor, weapon, etc. I believe that ...