The going gets tough with the TaskMaster Deluxe Industrial Chair. Difficult tasks don't stand a chance. With a 15 year warranty 8" of pneumatic lift and an additional 10" with our Wave Tube Extension. Features include paddle lever controls for 10° seat tilt and 22° backrest tilt. Ergo knob controls 5" backrest height adjustment. 2-1/2" seat cushion depth. 360° swivel. Each features a 5-leg, 26" Dia. tubular steel base with 2-1/2" high-impact nylon glides for safety and stability. Sturdy, ergonomically correct high, mid and low-rung polypropylene footrests mount securely to base. Covered with Black microcellular, self-skinning polyurethane foam for extra comfort.