Parts from three chairs, and a donut spare
Tall gas cylinder from one
This chair was uncomfortable, but liked the height of it
Free
Seat and and adjustment mechanism, has six different adjustments
This chair had a bad gas cylinder but was very comfortable
Free
All metal base that had five good casters from another
This chair was uncomfortable and ugly
$1 paid that for the base and casters
Finally decent use for that poor excuse of a spare tire
Spare donut
Free