This attaches the aluminum frame with the back, size A, B or C, made of metal and the color is steel.

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.

These are pre-owned, need deep cleaning, show wear and have rust that may need to be touched up, but they are solid and ready to be put to work on your chair.

This is for Four Back Screws that fits the size A, B or C chair, and is a genuine OEM piece for the Aeron office furniture line by Herman Miller.

If you want multiple parts we can combine shipping.