Pack of 4 valve cartridges with a powerful butane / propane gas mixture in a ratio of 80/20. The safety valve enables the operation of Campingaz devices with the traditional Campingaz screw cap, the Easy Clic Plus cap.Valve cartridges can easily be removed from the device, even if they are not completely empty. Ideal if you have to operate several devices with one cartridge on the go. These gas cartridges fit all Campingaz valve cartridge devices (e.g. Party Grill 400 CV, Bivouac, Lumostar Plus PZ lantern).