This SodaStream Quick Connect CO2 gas cylinder is designed for SodaStream sparkling water makers equipped with the Quick Connect system.- Each cylinder lets you produce up to 60 litres of sparkling water, hence preventing you from throwing out up to 60 plastic water bottles.- The cylinder takes seconds to install.- All SodaStream cylinders undergo a strict process of triple quality control, guaranteeing unmatched safety of use. - To ensure health and safety, only premium-quality food-grade CO2 gas is used in the cylinders.It's recommended to have at least two or three CO2 gas cylinders on hand at all times: not only will this allow you to save on shipping costs, but it'll also let you rest assured knowing you'll never run out of delicious bubbles!