Features:This bicycle saddle seat post adopts qualified carbon fiber, lightweight, solid, unbreakable and durable.Clamp mount is crafted with high strength aluminum, corrosion resistant, can be firmly mounted on bike without shaking. Frosted treatment of the surface, abrasion resistant and scratch resistant. Shockproof design, give you a better cycling experience.6 different options for you to choose, you can find one that fits your bike.Suitable for mountain bikes and road bikes, easy to install.Specifications:Condition: 100% Brand New and High QualityMaterial: Carbon Fiber + AluminumSurface Texture: 3KColor: Frosted BlackLength: 350mm/13.78''; 400mm/15.7'' (optional)Diameter: 27.2mm/1.07'', 30.8mm/1.21'', 31.6mm/1.24'' (optional)Options: 27.2X350MM; 30.8X350MM; 31.6X350MM; 27.2X400MM; 30.8X400MM; 31.6X400MMSuitable for Mountain Bike & Road BikeWeight: Approx. 232-266gPacking List:1 x Bicycle Seat Post