Flip Knob (Lever) Kit for Herman Miller Classic Aeron (Before 2004)

Great replacement for the original thumbwheels; so good that I ordered a second kit for another Aeron I have. One problem was getting the right tension on both arms, so I recommend trying to wiggle the arms before putting the back on (it took me three tries to get the tension right). The video also should mention that the original parts need a T27 torx bit to get them off; a 5mm hex works to remove the chair back and install the new kit. It probably would be much wiser to recommend using manual hex and torx keys than to use a power drill/driver (as shown in the instruction video) so as to not don't ruin the bolts or strip the chair back holes.

Worked perfectly in my older Herman Miller Aeron. Back to work…thanks!

Not full 5 only because finding the correct amount of tension to tighten the screw during install is difficult. It’s easy to over tighten/ undertighten, wish that part was a bit easier.

Other than that annoyance , works as described.

Bought this because I had a snapped bolt and plastic washer on a roller mechanism. bought this because could get both right and left side replacements for cheaper than a new roller mechanism. Good value, and the installation video made it quite simple to do the work myself.

The item was fine and gest the job done. It's not as smooth as the original thumbwheel and does seem to lock up to lower the armrests. Also there are no instructions included so you have to figure it out on your own how to install it.