Please contact firstname.lastname@example.org to discuss These high quality gas cylinders are from the USA and contain 4.5kg of CO2. Our micromatic regulators fit onto these cylinders to be used inside our new Generation 2 WilliamsWarn and with our BrewKeg range. Regulator sold separately. These are discounted for customers buying a WilliamsWarn Personal Brewery. To find out where in New Zealand you can refill your CO2 gas cylinder with food grade CO2 [ux_video url="https://vimeo.com/251417301?autoplay=1&loop=1&autopause=0"] [button text="Click here" style="primary" size="medium" link="https://williamswarn.com/?smd_process_download=1&download_id=13341" target="_blank"] Brand new cylinders from the USA containing 4.5kg of CO2.