... high quality motorcycle screw: 2)Material:steel,stainless steel, 3)Surface:zinc(white,blue,yellow,black) 4)Size:M2 to M12mm high quality ... motorcycle bolt:1. Grade: GR1,Grade2,Grade5(Ti6AI4V)2. Standard: GB, DIN, IFI, UNC, ... 4.Surface Treatment: Polishing, Anodizing, Black oxide 5.Material: Titanium alloy and pure titanium6. Applications: Chemical industry, Medical field ...