6300 Series Heavy Duty Square Seat Stool with Backrest, Supports Up to 500 lb, 23.25" Seat Height, Brown Seat,Gray Back/BaseThe durable construction and classic design of the 6300 Series heavy duty square seat stools with backrests are ideal for hands on educational settings like art rooms, science labs, home economics or shop classrooms. Features a square, contoured hardboard seat with 16 rivets. Outer diameter made from strong 18 ga steel tubing. Foot rings, 0. 63" outer diameter are welded to each leg by four contact points for added rigidity. Features backrest that