Features:
1.Shock Absorber: The Bike seatpost dapmens vibration effecitvely as it the bike seatpost can change the amount of force required to better abosorb the vibration according to your body shape.
2. Size&Material: Attention In Advance: Please measure and check the diamater of your current bike seat post sizes before ordering.Made with Alluminum Alloy
3. Dustproof Ring: The dustproof ring on the shaft of the mtb seatpost can keep inner spring coil and damper rubber from gravel,dust or sand for longer use
4. Various Use: bicycle seatpost offers easy-to-set,secure,durable use which makes this bike seatpost shock absorber available for mountian bike, BMX bike, commuter bike.
5. Height Adjustable, seat tube diamete: the original is 27.2mm, but some offers combo of seat tube and adjust-diameter Accessory via which can it be adjusted to 30.0/30.4/30.8/31.6/33.9mm

Package List:
Choice 1: 1 x seat tube
Choice 2: 1 x Seat tube ( with adjust-diameter Accessory)