27.2mm to 30.4mm Seat Post Shim/ MTB bike Road bicycle SeatPost Tube Adapter

This is a NEW seatpost shim.? It is used to make your 27.2mm seatpost fit into your oversized seat tube.? It's really simple:
You have a 27.2mm seatpost (suspension or standard)? but you have a frame with a 30.4 mm ID seat tube.? You put this shim/spacer in your seat tube and voila!? Your 27.2mm seatpost will fit precisely in your 30.4mm ID seat tube.

Wondering what size seat tube ID you have?? Often your old seatpost will have it stamped on it? near the bottom.?

Features:
* ID is 27.2mm? thickness is 3.2 mm? OD is 30.4mm
* Fits 27.2mm seatposts and 30.4 mm ID seat tubes (your frame)
* 60mm long
* Color:? Black

* 6061 Aluminum
* Anodized finish
* Size info printed right on shim
* Weighs about 22g