1 200mL burst pack in a box with daming strips, gloves and sanding strip. A single use burst pack is designed to seal 5 - to 6 - inch conduits. Mulitple burst packs can be used for larger conduits. The foam adheres well to all types of conduits and does not harm cable jackets. The seal is removable. Stops gasses and water. Protects critical electrical and telecommunication apparatus from damage and failure.