Use with Sheetrock gypsum panels, joint tape, and joint compound. Repairs large holes in interior drywall walls and ceilings. Suitable for both 1/2" and 5/8" thick drywall panels. Meets building code requirments for repairing 1-hour, fire-rated drywall partitions when used with fire-rated drywall. Each package includes six drywall repair clips and 12 drywall screws.