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 1.Item Name: Titanium Fastener2.Material: Pure Titanium and Alloy Titanium3.Grade: Gr1,Gr2,Gr3,Gr4,Gr5(Ti-6AL-4V),Gr7,Gr9,Gr12, etc.4.Standard: GB,DIN, IFI,UNC,UNC,JIS, BS,BSW ,ISO5.Specification: Screw: M2.5--M64*L6—300mm (or as your inquired ) Bolt: M3-M64*L6—300mmNut: M2.5- ...