Features1High-strength aluminum alloy shock-absorbing seatpost, fine workmanship and high hardness, ensure nice durability. 2Ergonomic design, you can adjust the softness and hardness according to the riding surface and weight, making the riding more comfortable. 3Seatpost Size: 27.2mm, Length: 350mm, travel: 50mm.SpecificationFeatures:High-strength aluminum alloy shock-absorbing seatpost, fine workmanship and high hardness, ensure nice durability.Ergonomic design, you can adjust the softness and hardness according to the riding surface and weight, making the riding more comfortable.Seatpost Size: 27.2mm, Length: 350mm, travel: 50mm.Easy to install and use, suitable for MTB, mountain bike, road bike, etc. products with reliable quality and strong load-bearing capacity.Specifications:Color: Black + RedMaterial: Aluminum AlloyDiameter: 27.2mm / 31.6mm(optional)Travel: 50mmLength: 350mm/ 13.8inPackage Size: 500 * 50 * 50mm/ 19.7 * 2.0 * 2.0inPackage Weight: 490g/ 17.3ozPacking List:1 * Bike SeatpostPackage List1 * Bike Seatpost