The Grainger 14L060 is a 14-inch diameter, 60-inch long cardboard concrete form tube made from heavy-duty, high-strength cardboard. It has inside diameter of 13.75 inches and is rated for concrete pour pressures up to 1500 psf. The cardboard tube can be cut to desired lengths. It is lightweight and economical. This form tube creates a smooth concrete finish and is disposable after use. It is an ideal concrete form for footings, piers, columns and pilings.