Safely reach items on high shelves with this step stool. Each of the two steps feature a rubber surface to prevent slipping. Spring loaded casters allow for easy mobility and retract when you step on the stool allowing the rubber ring at the base to grip the floor for added safety. A yellow powder-coated finish covers a steel frame that will support up to 500 lbs. Overall dimensions of this step stool measure 17 7/8" x 17 1/8" (Dia x H) with a bottom step height of 8 7/8". Easily assembles without tools.