SIZE: 26/27.5/29in,Stroke:100mm, tube length: 210mm, vertical tube outer diameter: 28.6mm MATERIAL: Mountain bike suspension fork, Made of high quality Aluminum alloy, strong and durable, Stable control of your bike, Play a protective role in your Outdoor cycling HIGH EFFICIENCY: The independent fork bridge design, makes the front fork outside the foot tube more stable, effectively prevents the riding tube to be polluted by the dust, and stable control your PROFESSIONAL DESIGN: Exquisite workmanship, beautifully painted and has a bright appearance, numerical controlled precision bending. Shockproof and durable. Ergonomic design provides good condition in the long-distance cycling REBOUND ADJUSTMENT:According to the characteristics of mountain bikes, the Compression damping can adjust to the comfortable air pressure value according to the rider's weight and riding condition to achieve a better experience