Product details:

Built to be lightweight, but tough and space efficient, the Origami 4 Tier General Purpose Shelf folds up for easy storage when not in use. This steel 4-tier shelving unit can hold up to 250 lbs. per shelf without wheels or up to 75 lbs. on casters. Perfect for your garage, warehouse, or office, this little workhorse shelf comes with locking wheels for easy transport. No tools needed and no assembly required.