Cadac Dual Power Pak – A Dual Gas Cartridge Regulator for Camping & BBQing You can get up to 10 hours of portable gas supply from two standard EN417 threaded cartridges — no need to carry the bulk and weight of a full gas cylinder around. The Cadac Dual Power Pak connects to any low pressure BBQ with a standard ¼ inch BSP left-hand thread. It's particularly well-suited for the 2 Cook 3 Classic Stove and Safari Chef 30 LP Deluxe - but not for BBQs with integrated quick release (QR) connections - check out the Cadac Dual Power Pak QR if that's the case. This thing does essentially the same job as a full gas cylinder - delivers a steady 28mbar gas supply to your BBQ - but at a fraction of the size and weight. Two standard EN417 threaded cartridges (445g or 500g) get plugged in to a single regulated supply and you get up to 10 hours of cooking g