Replacement Office Chair Tilt Control Mechanism - S2979 Product Details Item Weight: 4.3 pounds Product Dimensions: 16 x 16 x 5 inches Origin: Imported Item model number: S2979 Shipping Weight: 4.3 pounds Date First Available: April 18, 2013 Replacement office chair tilt mechanism with 10.2" long x 6" wide screw mounting hole pattern Single lever for gas cylinder height activation - Accepts standard tapered gas lift cylinders Tilt control - push lever in to lock tilt, pull out to unlock Twist hand wheel to tighten or loosen (adjust) backward tilt tension Black This very popular replacement office chair tilt control mechanism works greatfor restoring or repairing many office chairs, task chairs, and executivechairs that have the same screw mounting hole pattern.