Industrial Gray Polyurethane Medium Bench Height Stool is adjustable from 18-25.5 inches from the top of the seat to the floor and features 360-degree, all-around control mechanism making it easy to adjust no matter where you sit, black nylon adjustable foot ring, and black, nylon-reinforced fiberglass base with dual-wheel, self-braking, non-marring casters suitable for hard floors in chemical, soil, and puncture resistant polyurethane.