Cadac Trio Power Pak , 3 Cartridge Portable Gas Supply with Storage Bag You get around 7 hours of cooking gas from 3 of those 227g cartridges - no need to lug a big cylinder or buy gas in bulk. The Cadac Trio Power Pak is a neat little self-contained gas supply for camping, caravanning and general outdoor cooking. It's got a easy hose connection to the main unit, a handwheel tailpiece on the other end to screw onto your BBQ, a removable back panel for chucking in fresh cartridges, and it all comes in a nice storage bag too. Not really cut out for BBQs with the push-button quick release connectors though. The Trio Power Pak slots in nicely between a single cartridge setup and a full on dual cartridge rig - 3 of those 227g cartridges tucked away in a compact housing will give you about 7 hours of cooking gas for smaller BBQs. And it keeps all the benef