... ,TC4,Gr1,Gr2,Gr5 model:M2-M24 standard:DIN931DIN933 Titanium Standard Parts 1.Standard:DIN or Non-standard 2.Grade:Gr2 and Gr5 3 ... .Surface:Polishing, Anodizing, Black oxide Item NameTitanium Standard PartsMaterial Pure Titanium and Alloy TitaniumGradeGr2 and Gr5 (Popular Grade ... accessories: airplane, ship, bicycle, motorcycle, auto, medical, chemical, wheelchair, sports, anchor, weapon, etc.