Carbon Seat Post Carbon fiber 27.2,31.6mm seat post for bike bicycle parts and accessories,lightweight,high end,350mm lengh,3k Carbon seat postMonocoque Full Carbon Fiber Seat Post For BicycleSizes:27.2/31.6mmx350mmWeight: 160gFinish: Clear Coating,Available Weave: 3K/12K/UD 2 years warrantypassed EN test Carbon Seat Post,TR-SP012CF