Our refills come conveniently packaged two refills per box so you can enjoy your Cork Pops over and over. Uses an an environmentally safe, low pressure propellant that does not affect the flavor or bouquet of any wine and has no effect on the atmosphere or ozone layer. Each refill will open approximately 60 - 80 bottles before requiring replacement. Corkpops maintains its all important customer pledge of an environmentally safe product by compliance with EPA regulations.