Size: 25.4/27.2/28.6/30.4/30.8/31.6 × 350mm (apx 305g/pc), Total length: 350mm, Tube Length: 325mm, Head Length: 25mm. Setback: 20mm. Adjust tube length of 0 to 350mm.
Made of High quality 6061 T6 aluminium alloy. Light weight,never rust.Strength: 4.9 levels ultra high strength, maximum of 580lbs
How to Choose the Size:1.Check the diameter of the original seat post,choose the same size as the original diameter. 2.Measure the inside diameter of the frame tube.
With adjustable head, Easy to install. Frosting finish, exquisite workmanship, nice touch feeling.
Suitable for most road bike, fixed gear bicycle, mountain bikes, downhill bike, track bike, MTB, BMX, DH, etc.