1.Gold, Blue, Purple, Green, Ti natural 2.GR1,GR2,GR3,GR5,GR7,GR9 3.M2.5~ M64*L 4.DIN912/933/7991/7984/6921,ISO7380 ... Item NameTitanium FastenerMaterialPure Titanium and Alloy TitaniumGradeGr1,Gr2,Gr3,Gr4,Gr5(Ti-6AL-4V),Gr7,Gr9,Gr12, etc.StandardGB,DIN, IFI,UNC,UNC,JIS, BS,BSW ,ISODIN912,913,914,915,916,931,933,7991,7984,6921,ISO 7380,JIS,BS etc.SpecificationScrew: M2.5--M64*L6—300mm (or as ...