About the product
If you have a seatpost with a diameter of 27.2 and a bicycle with a diameter of 30.9, you can use this adapter to safely use the narrower seatpost.
Features:
Inner diameter: 27.2 mm
Outer diameter: 30.9 mm
Adapter length: 80 mm
Package contents
1x Seatpost adapter from 27.2 mm to 30.9 mm