Features: Premium high strengths aluminum alloys bicycles seatpost delivers durability and weight saving performances, available in 27.2mm/30.9mm/31.6mm diameters to fit most bike frames. With sandblasted anodized surfaces treatments for scratch resistance, combining light weight construction (350g average) with reinforced structural support for stable rides. Ideal for mountain/road/commuters cyclists seeking reliability seatpost upgrades, particularly suited for riders between 160 190cm height requiring optimal saddle positioning. Perfect for commuting, trail adventures, and endurances cycling where vibrations dampening and secure height adjustment matter most during long distance journeys. Engineered with machined clamping systems and graduated measurement markings, this universals bike seat post ensures simple installation and millimeter precise height customization. Specifications: Color:Three Choices Dimension:350×31.6mm/13.77×1.24in 350×30.9cm/13.77×1.21in 350×27.2cm13.77×1.07in Component:Aluminum Alloys Package Includes: 1pc bicycles seats tube note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you will not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual color.