Description:Constructed of ultralight and durable CNC 7075 aluminum alloy.Matte surface, anodizing treatment, exquisite workmanship, nice touch feeling.Thickened pipe wall.With adjustable head, allowing you to get your seat at the perfect angle.Suitable for most road bike, fixed gear bicycle, mountain bike, downhill bike, track bike, MTB, BMX etc.Specification:Material: 7075 Aluminum AlloyLength: 400mm / 15.7inchDiameter: 27.2mm / 30.9mm / 31.6mmPackage Includes:1 Piece Bicycle Seatpost