NEVER RUN OUT OF PROPANE: Our built-in gas meter gauge provides accurate gas level readings, EMPTY TANK: Pre-purged vacuum ready for filling with propane; built from high-grade welded steel and powder coated for rust prevention, OVERFILL PREVENTION DEVICE: Comes with an OPD valve to prevent overfilling, SAFETY: 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, PORTABLE with easy to hold collar makes it a perfect buddy for camping, ice fishing, and other outdoor activities. Use this tank along with Flame King’s Propane Backpacks for easier transport. Check item numbers YSNBKPK-AF and YSNBKPK.