http://www.xinliantitanium.com Mini Titanium Seat Post Clamps Material: p_ure titanium,Titanium alloy Grade: Gr2,Gr5(ti6al4v),Gr9(ti3al2.5v) Specification: as your request Surface Treatment: Polishing,Anodizing, Nitriding Color: Ti nature,Gold,Blue,Green,Red,p_urple,Black,Rainbow Features: Light,High strength,Rustless