Coleman 500 cartridge offers 70/30 butane/propane gas mixture in threaded self-sealing cartridges with safety valve. They are compatible with all Coleman resealable appliances. 445 g butane/propane mix, valved cartridge. Size: 105 x 160 mm Weight: 598 g HAZARDOUS GOODS SHIPPING - UK MAINLAND ONLY MAX QTY PER ORDER 6