The 12 x 500 g Butane Screw Cartridge, Valve Cartridge, EN 417 Camping, Valve Screw Cartridge, EN521, with its threaded design, is the perfect solution for gas camping enthusiasts. Constructed with high-quality materials, it ensures reliable ignition and safe operation. The screw action design allows for easy and efficient refilling of butane gas, making it an indispensable tool for outdoor activities and adventures. With the EN 417 standard marking, this cartridge meets the stringent requirements of camping organizations and ensures safety and reliability in remote areas. Moreover, the EN521 approval seals its compatibility with a wide range of camping equipment, such as stoves, lanterns, and heaters. Invest in this high-performance butane screw cartridge and enjoy an unparalleled camping experience without worrying about the safety and convenience of your fuel source.