===== Herman Miller Aeron ===== 
Its a chair

====== Arm Rest ======
The bolts snap after prolonged use. 

I've used the following [[https://www.amazon.com/dp/B017V5AJX4|this listing]] before for replacement parts. Its $40 which is incredibly steep. It includes:
  * Bolt
  * Knob
  * Washer
  * Ball bearing
  * Plastic arm  guard
  * Friction Clamp
  * Metal Bar

However,  [[https://www.reddit.com/r/hermanmiller/comments/wyrb1v/classic_aeron_arm_yolk_bolt_size_answered/|others have indicated]] [[https://web.archive.org/save/https://www.reddit.com/r/hermanmiller/comments/wyrb1v/classic_aeron_arm_yolk_bolt_size_answered/|(Archived)]] the bolt itself can be found numerous places, including Lowes, Home Depot and [[https://www.menards.com/main/hardware/fasteners-connectors/bolts/cap-screws-hex-bolts/midwest-fastener-reg-1-4-28-x-2-1-2-zinc-grade-5-hex-cap-screw-1-count/85492/p-1444440108760-c-8730.htm|Mendards]]. Sizes are: 1/4"-28 2-1/2"