1.Easy for used 2.Aluminium meterial 3.The price is very cheap and fashion 1.Up to now. this aluminium is very fashion ,because the color have purple,red,blue,black,grey. you can choose modle for these. 2.If you finished power, you can fill power in it . the term of validity is three years 3. Don't hesitate,pls contact me and buy small aluminium fire extinguisher. 1KGS Aluminium power fire ...