Global Industrial 17"H Rolling Step Stool, Gray. This practical step stool can be used for various occasions. The round standing platform measures 11-1/2 in diameter, spacious to place your feet and features a non-slip surface. Spring loaded casters permit rolling & retract to allow base to hug the floor for stability. Over 17" top step height with top step diameter of 11-1/2". 500 lb. capacity., Lot of 1