The Expedition Essentials PQBM 5lb bottle adapter is an addition to the PQBM or Propane Quick Bottle Mount. This is an easily installed adapter for use with your PQBM (Propane Bottle Quick Mount). The adapter allows for the secure mounting of a 5lb propane bottle in your PQBM. Easily installed using your existing mounting hardware. Made from 5052 Aluminum.