Herman Miller Aeron Chair Arm Yoke Thumbwheel & Shim Kit – Replacement Adjustable Part

Got a Herman Miller Aeron that’s seen better days?

This is the little plastic shim and thumbwheel set you need to get the arm adjustment working like new again.

It’s the genuine yoke piece—the part that connects the armrest to the chair.

Yeah, it’s pre-owned, so it might have a little fading or wear (maybe a tiny scuff or two), but it’s totally ready to be put back to work.

If you’re into refurbishing chairs or just need to replace a broken wheel, this is a solid, budget-friendly find.

No box, just the bare part, but it’s all Herman Miller authenticity.