Alvin DC209 gas-lift utility stool. This versatile polyurethane task stool is perfect for any home, school, or office work area that needs drafting height. Ideal for extended sitting periods, it has a swivel feature, pneumatic height control, and an adjustable height between 18" and 26". Comfortable 13" diameter seat is made of super-soft molded foam. Also features a stable, 22" diameter, 5-star base on hooded casters. Puncture resistant, easy to clean, maintenance free. Weighs approx. 12 lbs. Black.