Listing is for a brand new Knee Tilt Mechanism with infinite lock. This unit will replace any and all brands of knee Tilt Mechanisms regardless of chair brand AS LONG AS THE MOUNTING HOLE PATTERN IS THE SAME. Mounting holes are spaced 200mm x 198mm (+/-) 7.874" x 7.80" (+/- 1/16"). The hole for the pneumatic cylinder will accept industry standard 17-4 taper.
1 handle is used to trigger pneumatic cylinder for height adjustment
1 handle is used to lock the knee tilt mechanism in any angle.