Features: 1. Better Riding Comfort: The seat cushion angle can be changed according to its own requirements for better riding comfort. 2. Quality Material: The items is made of high-strength aluminum alloy shell, which is completed by one forging process. It not only has a novel appearance. 3. Seal Ring Design: This product adopts the seal ring design to effectively protect the inside of the seat tube, so that the seal ring can be more close fit to the seat tube to prevent rain, cement sand and dust from entering, and also protect the oil inside from leaking and keep lubrication. 4. Suitable Models: The seatpost is suitable for road bikes, mountain bikes, for DH, for FR, for AM, for XC 5. Optional diameter : 27.2/31.6mm. Length: 350mm Notice: 1. Actual color may be slightly different from the image due to different monitor and light effect. Please allow 1-3cm deviation due to manual measurement. 2. Objects may have Logo, if you want to know, please contact us. If you mind, please do not bid. Specification: Material: Aluminum alloy Optional diameter : 27.2/31.6mm Length: 350mm Cushion locking method: double-nail floating type Product features: new shock absorb system to change riding comfort includes: 1 x Hydraulics lifting seatpost