Weehoo bushing/shim for 31.8mm seat post - fits my Lectric ebike

This is a bushing/shim for the weehoo bike trailer hitch that connects to the seat post. Mine is connected to my Ebike Lectric XP 3 which has a weird 31.8mm seat post so I had to make a custom size since I couldn't find any that fit this non standard size. 

If you need a different size, it is easy enough to tweak so just let me know what seat post size you need, it should be listed on the actual seat post.