This portable fire extinguisher is very easy to operate—just pull the pin, aim nozzle at the base of the fire and squeeze the handle. Suitable for use on Class B (liquids & gases) and Class C fires (energized electrical equipment). The Mariner 5 unit is manufactured from lightweight aluminum and includes a tough aluminum valve assembly. Includes a pressure gauge that provides at-a-glance status. Disposable. Key Features: Easy-to-read gauge tells you fire extinguisher is charged and ready for use Clear instruction label using graphics to show steps required to operate extinguisher Easy-to-pull safety pin Rust and impact resistant steel handle 2 lb. of fire extinguishing agent (Average) 6 year limited warranty UL approved strap retention bracket Coast Guard (USCG) approved when fitted with supplied mounting bracket Powder coated cylinder for corrosion protection