These slide over the metal hexagonal bars on the internal tilt engine that the swing arms attach to.

We sell over 100 different used parts. If you want to figure out what is wrong with your chair, and how to fix it, buy our twenty minute diagnosis via email, text, video or call for $20.00, purchase at this link, https://rcannon8156.mystorefront.online/?l=1&product=10059&action=product

If you are in Florida we might be able to come to your location and repair your chair for you, if you are interested please ask us for a quote, so we can let you know how much it will cost.

Please let us know if you have any questions.

Pre-owned, need cleaning, are dented, but still slide over the metal hexagonal posts on the internal tilt engine and will work on your chair.

This is for one pair of spacers for the size B medium, and is genuine OEM part for the Aeron furniture line by Herman Miller.

If you want multiple parts we can combine shipping.