Features:
OOTDTY  
brand new and high quality.
Aluminum Alloy Bicycle Seatpost Sleeve Convert Seat Post Tube Conversion Adapter 22.2/25.4/27.2/28.6/31.6mm
★Made from durable and high-quality aluminum material,which worth of your trust, lightweight and durable.
★Measure the diameter of the seat tube before perchase.
★Suitable for MTB bike, mountain bike, road bike etc.

Specifications:
Color: Black
Material: Aluminum Alloy
Length: 60mm/2.36"
A: ID 22.2mm / OD 25.4mm
B: ID 25.4mm / OD 27.2mm
C: ID 25.4mm / OD 28.6mm
D: ID 27.2mm / OD 28.6mm
E: ID 27.2mm / OD 30.4mm
F: ID 27.2mm / OD 30.8mm
G: ID 27.2mm / OD 31.6mm

Note:
No retail package.
Transition: 1cm=10mm=0.39inch.
Please allow 1-2cm error due to manual measurement. pls make sure you do not mind before you bid.
Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!

Package includes:
1 × Seat Post Tube Conversion Adapter