Soft Tough Economy Workbench Chair, Supports Up to 250 lb, 22" to 32" Seat Height, Black Seat, Black Back, Black Base Ideal workbench chair/stool. Adjustable height with 10" height adjustment. Durable polyurethane seat and back. Perfect for industrial or lab settings. Optional 2" carpet or hard floor casters (sold separately). Meets the federal standard performance test method for intensive use chairs, FED-STD 834A.