Check the listing for details. Replacement Gas Lift Cylinder for Steelcase 453 Criterion, Sensor, & Rally Chair. Condition: New. Listed at 49.99 USD. This premium quality, non-OEM replacement gas lift cylinder is made to fit the Steelcase 453 Criterion chair, Steelcase 458 Sensor, 433 Protégé, 460 Rapport, and 457 Rally chair (the numbers referencing the first three digits of the chair's model number stamped on the underside of the seat). This gas lift cylinder is NOT COMPATIBLE with ANY non-Steelcase chair. Piston stroke / travel height adjustment range of 4.5" (up & down)Overall length from end to end when fully extended is 15"Overall length when fully compressed is 10.5"Width of piston is 22mm (0.87")Includes lower attachment hardware: rubber bumper, washers, bearing, retaining clip, larger washer, & star retaining washerNon-OEM *** Note - This is a specialized gas lift which only fits the Steelcase 453 Criterion chair, 458 Sensor, 433 Protégé, 460 Rapport, and 457 Rally chairs - It does not work with other chairs.