The Flame King steel 3LB Propane Tank is empty, pre-purged, and vacuum-ready for filling with propane, avoiding the cost and headache of purging your new tank. Built from high-grade welded steel and powder coated for rust prevention. For your safety, this tank comes with an OPD valve to prevent overfilling. It also comes with a built-in gauge, so you don’t have to worry about running out of propane! The built-in gas meter gauge provides accurate gas level readings. Easy to hold collar makes it a perfect buddy for camping, ice fishing, and other outdoor activities; perfect for Portable Grills, Fire Pits, Heaters and Overlanding. X-ray and hydrostatic tested and DOT and Transport Canada certified so you can be sure to transport safely both in the US and CA.