DESCRIPTION --With the 2 separate semi-circular carbon tubes design, could adjust the level of two carbon tubes to change the cushion angle. --When the scale is at 0 degrees, the bike pad is in the horizontal state; locking, the screws under seat and the screw under the top constitute a triangle fixed mode, make more stable. Seat bar on both sides has the frost treatment, more conducive to locking. The 2 piecs carbon tubes are also different front and back, taking into account the different force, the thickness of seat post thickness has to do the appropriate treatment. * Condition: 100% Brand New & High Quality * Material: Carbon Fiber * Diameter: 31.6/30.8/27.2mm * Length : 330/mm *Angle: 25/5 Degree * Colour: UD Black Matt * Weight : About 215g 5g * Suit Rails7*7mm Package Includes: 1 PC x Bike Seat Post Attention: 1. Please allow 1-3 cm error due to manual measurement (1 inch = 2.54cm) 2. Item color displayed in photos may be showing slightly different on your computer monitor since monitors. Thank for your understanding.