Titanium countersunk head screws Standard:DIN7991/DIN963 Material:Pure titanium,Titanium alloy Grade:Gr1,Gr2,Gr5,Gr7,Gr9 Specification:M3-30*L6-300 Head Type:Countersunk Head Drive/Recess Type:Slotted,Hex,Allen,Torx,Philips Surface Treatment: Polishing,Anodizing, Nitriding Color:Ti nature,Gold,Blue,Green,Purple,Black,Rainbow http://www.xinliantitanium.com