1.Size：Length: 9.8"(250 mm);Diameter: 1.13“（28.6mm）;Thickness of the tube:0.09"(2.2 mm).Weight：5.3 ounces.Color:Black.
2.Material: Seatpost made of aluminum alloy,strong and durable.
3.Easy Instal Lation: Installation is a breeze, just unbolt your old seat and remove your seat post then bolt on your seat to your new seat post and install it into your bike frame.
4.Applicable Fit:Suitable for most bike,such as fixed gear bicycle, mountain bikes and track bike.
5.Pay Attention:Please do measure the actual required diameter before purchasing. Saddle clamp is not included, please buy the saddle clamp separately if needed.