https://www.kegland.com.au/8l-pco38-pet-keg-with-ball-lock-disconnect-tapping-head-kit.html
These new PCO38 kegs are made from PET and Nylon that is blended together to get reduced oxygen and CO2 transmission rate. These new plastic kegs are perfect for sharing beer with friends or getting into home brewing.
The 8Litre and 4Litre sizes are a useful size for small batches or splitting a single batch into different keg types.