Converts POL LP Tanks to QCC Type1 hoses and regulators RUST PROOF BRASS CONNECTORS: Made of 100% brass ensuring lifetime durability; leak proof and animal chew-proof Running out of fuel from a smaller propane tank won’t be an issue, simply use this POL adapter to connect to a larger fuel supply, like your 100 lb or RV tank, and finish cooking! SAFE & SECURE: Hand wheel provides a more secure and airtight connection between your propane tank and propane appliances Easy to hook up and ensures a comfortable cooking experience