[Original 27.2 turn 28.6mm seat tube sleeve reducer]

[Original 27.2 turn 30.0mm seat tube sleeve reducer]

[Original 27.2 turn 30.8mm seat tube sleeve reducer]

[Original 27.2 turn 33.9mm seat tube sleeve reducer]

[Original 27.2 turn 31.6mm seat tube sleeve reducer]

[Original 27.2 turn 30.4mm seat tube sleeve reducer]

Features:
Made of full CNC machining aluminum alloy, anti-slip, light weight and durable.
Easy to install and remove, convenient for you to use.
With this post tube adapter, you can change the bicycle tube to the size you want.
Suitable for MTB bike, mountain bike, road bike, etc.
Please check the outer diameter of your bicycle tube. Measure the inner diameter of the old clamp. Or measure the outside diameter of the tube. Then make the right choice.

Specification:
Condition: 100% Brand New
Material: Aluminum Alloy
Color: black
Options: 27.2mm to 28.6mm, 27.2mm to 30mm, 27.2mm to 30.4mm, 27.2mm to 30.8mm, 27.2mm to 31.6mm, 27.2mm to 33.9mm
Size Length Weight 27.2mm to 28.6mm 60mm/2.36inch 13g 27.2mm to 30mm 60mm/2.36inch 22g 27.2mm to 30.4mm 60mm/2.36inch 29g 27.2mm to 30.8mm 60mm/2.36inch 25g 27.2mm to 31.6mm 60mm/2.36inch 37g 27.2mm to 33.9mm 60mm/2.36inch 54g
Package list:
1 * Bike Seatpost Tube Adapter