DAP DryDex Spackling may be used to fill holes and cracks in surfaces. This product may be used on drywall, plaster, wood, brick, stone, and more. It provides a unique dry time color indicator that verifies when the patched surface is dry and ready to be sanded and painted. It provides a smoother finished surface in a shortened amount of time. Its ready-to-use formula spreads easily for fast, professional repairs that will not crack, crumble or flake. DryDex dries hard, sands easily and is paintable. Product is for interior and exterior use. Selling unit is 32 ounce.