Materials: Titanium Gr2,Gr5(6Al4V),Aluminum 7075-T6,6061-T6 Spec:M5x18 with washer Treatments:Polished,Anodizing Ti Titanium Stem Bolts,Ti Titanium bike partsMaterials: Titanium Gr2,Gr5(6Al4V),Aluminum 7075-T6,6061-T6Spec:M5x18 with washerTreatments:Polished,Anodizing(Blue,Gold,Red,Black)