Cork Pop Refill cartridge features 2 pack of environmentally safe, low-pressure inert propellant that does not affect the flavor or bouquet of any wine and has no effect on the atmosphere or ozone layer | Each refill cartridge may be used with all Cork Pop models and will open approximately 60-80 bottles of wine before replacement | Extended shelf-life; Make sure you have refills on hand when you need them | Each refill cartridge measures approximately 4 inches | Individually fitted in protective packaging