It doesn't get much better than this when it comes to saving an office chair from the dumpster that you don't have a lot of money invested in. Don't let the smaller size fool you. It is more than adequate for small and medium size chairs, having thicker steel than you imagine, made in North America, has noiseless bearings and a large forward knob for lean back tension adjustment. Very suitable for adapting to our mounting board since the smaller footprint will not usually interfere with the original mounting bolt holes. Also view our Budget #3318G gas mechanism.