ITEMS INCLUDED – (2) Refillable Empty 1LB Propane Tanks, (2) Caps, and (2) Allen Keys - 2mm (5/64") in size PERFECTLY FITS MOST PROPANE HAND TORCHES - The tall and skinny design provides a better grip on the torch while soldering, welding, or searing steaks, caramelizing sugar, melting cheese, and much more REDUCE WASTE - Keep disposable propane tanks out of the environment by using Flame King 1LB refillable cylinders SAFE TO USE - Flame King refillable propane tanks are the only 1LB tanks Certified by the DOT as legally and lawfully refillable and transportable; it is not safe or legal to refill and transport disposable 1LB tanks SAVE TIME - Refill from the comfort of your backyard in few easy steps (please watch the video); compatible with any appliance that uses a 1LB propane tank SAVE MONEY - Stop wasting money on disposable tanks and start saving money with our reusable, safely and easily refillable propane cylinders HIGH-GRADE STEEL construction, X-ray & Hydrostatic tested, powder coated for long-lasting exterior protection - UL1769 listed valve PLEASE NOTE - These cylinders fill fastest & safest with our commercial Flame King Refill Adapter (sold separately) or the Flame King REFILL KIT!