The 3M High Strength Large Hole Repair Kit is a complete solution for repairing wall and ceiling damage between 3" and 5" in diameter? Designed for both interior and exterior use (with exterior paint), this all-in-one kit includes a 6" putty knife, fiber-reinforced spackling compound, 5.5" x 6" repair plate, fiber tape, and a sanding pad. The innovative repair plate flexes and adheres behind the wall, creating a strong backing that helps deliver professional-looking results with no shrinking, cracking, or sagging. The spackling compound is easy to sand and dries quickly, making repairs up to 5X faster than traditional methods. The repair plate can be trimmed to fit irregular hole shapes, making the kit versatile for a variety of jobs. Whether patching drywall or ceiling damage, 3M High Strength Large Hole Repair Kit gives you the tools and performance needed for durable, seamless repairs. Not for use on structural joints or stress cracks.