Heavy Duty 700 lb Capacity. Angled "U" shaped steel frame and electronic welding provide the strength needed for heavy duty jobs. Rugged 18 gauge reinforced stainless steel shelves are stain and rust resistant. Extra load casters with cushion tread non-marking wheels. Easy to clean and sanitize, simply wipe down or steam clean. Leg and handle bumpers protect walls and furniture. Caster Type and Size: 2 Swivel/2 Fixed, 5" dia./8" dia.