Simplify the following text for a Grade 7 native English-speaking person.
Original: It consists of a metal or plastic container filled with a flammable fluid or pressurized liquid gas , a means of ignition , and some provision for extinguishing the flame .
Simplified: It is made of a plastic or metal container , which contains a flammable liquid or gas . There is also a means of producing the flame , and extinguishing it , when it is no longer needed .