The cylinder has a valve and a threaded head Equipped with a threaded and self-sealing safety valve that complies with the EN417 EN521 standard For use with mobile stoves and multi-function burners Ideal for camping, fishing, picnicking or hiking Can be used without additional adapters Specification: Capacity: 300g - 535ml Propane-butane mixture Packaging: aluminum Thread length: 10 mm (7/16")