- Size Variants: 4.5 / 6.5 / 22.5 kg. - Ceasefire’s new CO2 extinguisher is perfect for fires involving flammable liquids such as petrol and oil. - Extremely user friendly, with a protective cover over the valve to avoid the risk of freeze burn, Ceasefire's CO2 valve type extinguishers are the perfect weapon against large, hard to fight B and C Class fires.