3M High Strength Large Hole Wall Repair Kit, Innovative Large Hole Repair Kit That Allows Every Do It Yourselfer Fix Their Walls Like A Professional, New Behind The Wall System & Fiber Reinforced Compound Allows An Easy Fix For Holes Ranging From 3" To 5".

• Proprietary 3M back plate adheres behind wall for flat fill
• Includes all tools necessary for the repair
• Repairs wall and ceiling holes up to 5"
• Won't shrink or crack
• Easy to sand, accepts paint
• Great for drywall or plaster
• Interior/exterior use (with exterior paint)