Primus Onja Duo is a really lovely compact 2 burner stove suitable for big pots and family/group cooking The quality is fantastic the lovely oak lid can be used as a platter or chopping board The whole stove folds surprisingly flat at only 140mm by 290mm by 430mm and it comes with a convenient carrying strap making it suitable for short excursions as well as a great family camping stove The Onja Duo uses the Primus Duo cartridge connector capable of connecting to virtually any disposable gas cartridge with a valve This includes the easily available screw in style disposable valve cartridges perfect for this portable stove Primus canisters are available in a range of sizes 100g 230g and 450g Many other brands are also available It will also fit Campingaz CV300/CV470 valved cartridges which are very popular in France or Coleman C100/C250 etc style cartridges The Primus Onja Duo is a joy to use a real luxury you can look forward to getting out every year for your camping trips Gas not included