The bike seat post made of High-carbon steel material for long time and durable use. It has a simple design, but very practical in use, giving you a . It is easy to use and install, bring much convenience to you. most mountain bikes, road bikes and more. Features -Color:Black -Material:High-carbon steel -Size:20.00X2.50X2.50cm/7.86X0.98X0.98in -Upper diameter: 22.2mm, lower diameter: 25.4mm - This seat post is very easy to install on your bike, giving you much convenience. - The bike seat post is mainly made of sturdy material, which is strong and durable.It has a simple structure. And more stable performance. - The seat rod can help you to ride safely and prevent too much vibration during riding. - It also can bear the weight is more comfortable than when it is not installed. It is also one of the indispensable accessories for bicycles. - craftsmanship and good material make it look simple yet . Package list: 1 x Bicycle Seat Post