Pure Titanium Bolt: 1.Material: Gr1, 2, 3, 4, 5, 7, ... , GB/T 3.Parts: bolt and nut 4.Woodencase Pure Titanium Bolt: 1. Material: Gr1, Gr2, Gr3, Gr4, Gr5, ... Screw Varieties: titanium cylindrical screw, titanium head screw, titanium pan head screw , titanium square head screw titanium hexagon srew, titanium slot word screw, titanium cross slot screw. ... as the parts of the cars,the bikes pure titanium bolt