Made of High quality 6061 aluminium alloy.Light weight,never rust.
Strength: 4.9 levels ultra high strength, maxium of 580lbs.
Fit for Seat Post Diameter:25.4mm/27.2mm/30.8mm(30.9mm)/31.6mm.
Length:350mm.
Setback: 20mm.
Adjust tube length of 0 to 320mm.
Please confirm the seat post size you need before you buy it.

How to Choose the Size:
1.Check the diameter of the original seatpost,choose the same size as the original diameter.
2.Measure the inside diameter of the frame tube.
With adjustable head, convenient to install.
Suitable for most mountain bikes, road bike, fixed gear bicycle, downhill bike, track bike, MTB, BMX, DH, etc

Package Included: 1 pcs bicycle seat post