Alex Plus® Spackling provides unsurpassed performance for filling holes & cracks in surfaces such as drywall, plaster, wood, brick, metal, and stone. Its ready-to-use, smooth white formula spreads easily for fast, professional repairs that will not sink, shrink or crack. Professional Strength - Repairs Drywall, Wood & Metal Won't Sink or Shrink Superior Paintability—Won't Flash Paint Exceptional Durability Sandable and Paintable Easy Water Clean-Up Interior/Exterior Use* *For exterior applications, always topcoat with a quality paint.