The Flame King 1LB Blue Refillable Propane Cylinders are perfect for welding, soldering, and cooking torches. The tall and skinny design provides a better grip on the torch while soldering, welding, or searing steaks, caramelizing sugar on creme brulees, melting cheese, and much more. These propane bottles are refillable & transportable. Our unique & patented valve design is not available from any other manufacturer. Spend your money wisely & start refilling small cylinders whenever you need them! Tossing a single-use disposable tank is just a silly waste of resources & can be a potentially huge problem in the waste stream! Join the eco-revolution! Please note: these cylinders fill fastest & safest with our commercial Flame King refill adapter - sold separately. - UL1769 listed. The TALL and SKINNY design of the 1LB Refillable Cylinders provide a better grip of the tank making it the PERFECT CYLINDER for welding and soldering torches, as well as kitchen torches!