CO2 fire extinguisher series Cylinder material: CK45/34CrMo4/AA6061 Valve material: Brass Working pressure: 15MPa Test pressure: 25MPa Safety valve: 22MPa Fire extinguish agent: CO2, using for oil & grease, electrical Fire Class: B & C Typical bracket: Wall bracket Warranty: ≥ 4 years This product is rechargeable! CO2 Fire Extinguisher-4.5kg/10lb TGr- MT 4.5 (10LB)