Bontrager XXX 2015 Latest Super Low Resistance Full Carbon Fiber Bicycle Seatpost MTB/Road Bike Seatpost Seattube Seat Bicycle Parts

Material: Carbon fiber
Finish: 3K
Diameter: 27.2/30.8/31.6mm
Hight: 350/400mm
Weight: 210g+-10g(27.2*350mm)   

please leave message of size : like that:30.8*400mm
Use: Road bike, MTB,TT bike, track bike and so on