... 3. Detailed Information Item NameTitanium Bolts and NutsMaterialPure Titanium and Alloy TitaniumGradeGr1,Gr2,Gr3,Gr4,Gr5(Ti ... : M4-M64Surface TreatmentPolishing, Anodizing, Black oxideFeatureslight weight, acid and alkali resistance, anti-corrosion, excellent mechanical strength etc. ... sports, anchor, weapon, etc Our commitment to quality is in everything we do, from the materials we use ...