CORROSION-RESISTANT and RUST-FREE! The Flame King 1LB refillable propane cylinder is highly resistant to rust and saltwater corrosion, perfect for fishing, camping, backpacking, and any outdoor adventures! Built from high-grade aluminum, this tank has a bright and shiny smooth finish and clean, dry, and flake-resistant interiors. It fits all appliances that today’s non-refillable tanks work with. This propane bottle is legally & lawfully refillable & transportable – just like your BBQ tank is. Our unique & patented valve design is not available from any other manufacturer. These refillable propane cylinders are perfect for practically every Mr. Heater, Weber, Coleman & similar outdoor type applications that would fit a disposable tank. Spend your money wisely & buy the last 1LB propane cylinder you will ever need! Tossing a single-use disposable tank is just a silly waste of resources & can be a potential huge problem in the waste stream! Join the eco-revolution! Please note: these cylinders fill fastest & safest with our commercial Flame King refill adapter – not included but available with our Refill Kit! High-grade aluminum construction, X-Ray & Hydrostatic Tested, DOT & TC Certified for 12 years (10 years in Canada) – UL1769 listed.