Large hole repair kit uses a new behind-the-wall system and fiber reinforced compound to easily fix holes ranging from 3 In. to 5 In. Includes: 12 Oz. tub of wall repair compound, 6 In. self-adhesive back plate, 6 In. putty knife, tape, and 3M sanding sponge to smooth surface after patching. Repairs damaged areas on walls and ceilings. Great for drywall and plaster. No shrinking, cracking, or sagging. Dries 5 times faster. Firmly holds nails and screws. Interior/exterior. White when dry.