1Aluminum Alloy Material: The bicycle suspension seatpost is made of high strength aluminum alloy, with lightweight design and effective shock absorption. 2CNC Integrated Molding: CNC accuracy cutting, high compression resistance, torsion resistance, tenacity and firmness without bending. 3Exquisite Workmanship: CNC anti skid groove, surface CNC, precise thread, easier locking, anti skid beauty, strong texture, bright color. 4Ruler for Height Adjustment: The base tube is provided with a ruler for height adjustment, with clear scale lines and clearer installation. 5Installation Lower Limit: Each type of seat tube has an installation lower limit to ensure that the part under the installation safety line is completely inserted into frame seat tube.