Fast drying spackling paste for interior or exterior use. Dries fast, sticks firmly to most clean, dry surfaces, sands easily, and may be primed or painted when dry to the touch. Recommended as an interior/exterior spackling paste to fill cracks in drywall, plaster, or wood.Sticks to metal for repairs on dents in metal doors and siding. Shrink resistant formula won"t sag or crack like drywall mud.