Description:This adjustable Integrated Seatpost can adjust angle slightlySeat Post diameter: 25.4mm, 27.2mm, 28.2mm, 30.4mm, 30.9mm, 31.6mm Total Length: 350mm (Please Choose Correct Size)Made of qualified 6061 aluminum alloy- Lightweight, anti-rust, high strength and solidIntegrated design thicken pipe makes it more solid and sturdyPerfect for most mountain bikes, road bike, folding bike, fixed gear bicycle, track bike, BMX, etc.Specification:Material: 6061 aluminum alloyTotal length: 300mmPackage Includes:1 Piece Bike Seatpost