How to choose a specification?

1. Measure the outer diameter of the seatpost

2. Measure the inner diameter of the middle tube of the frame

Features:

Made of aluminum alloy material, anti-rust and durable.

CNC machined surface anodized.

Suit for MTB bike, mountain bike, road bike etc.

Helps you to change the outer diameter of your bicycle seat tube, you can easily adjust the diameter of your bicycle seatpost without the hassle of repurchasing bicycle seatpost.

Specification:

Material: Aluminum alloy

Length: 60mm

Size Chart:

22.2 To 25.4mm         25.4 To 27.2mm

25.4 To 28.6mm         25.4 To 30.9mm

25.4 To 31.6mm         27.2 To 33.9mm

27.2 To 28.6mm         27.2 To 30.8mm

27.2 To 31.6mm         27.2 To 30.4mm

28.6 To 31.8mm         30.9 To 36mm

30.9 To 31.6mm         31.8 To 34.9mm

31.6 To 33.9mm         33.9 To 34.9mm

27.2 To 30.9mm         27.2 To 30mm

30.9 To 33.9mm

Package Included:

1* Seatpost Adapter