Extra long: 17.7" (450mm); Help to raise height of saddle, so that tall rider don't have to bent much forward
Adjustable Seat Post Clamp ,Make your riding more comfortable,Made from 6061-T6 aluminum for added strength and durability
Seatpost outder diameter:25.4/27.2/28.6/30.4/30.9(30.8)/31.6mm, Overall Length: 450mm
Considering Human , environment,operator experience,tool factors ,please allow+/-0.5mm measurement tolerance
Suit for most Fixed Gear bike ,Road Bike ,Mountain Bike , Universal Bikes,etc.
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.
Package Included: 1 pcs Bicycle Seatpost