ITEMS INCLUDED – Refillable Empty 1LB Propane Tank, Cap, and 2mm (5/64") Allen Key REDUCE WASTE - Keep disposable propane tanks out of the environment by using the 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