Money Saving: Refill your 1 lb green propane bottles directly from standard 20 lb propane containers. A simple, effective solution to save money and no more expensive bottles. Super Easy: Quick to install on 5-40 lb tanks without any tools. Perfect for camping and outdoor cooking. Well Made: High-quality solid brass provides a secure and tight connection between tanks, lasts a long time. CSA Certified. Much Safer: Built-in safety feature to prevent overfilling your bottle, it automatically shuts off gas flow when pressure is reached. Warm Tip: Put your 1 lb cans in the freezer for 30 minutes, it will help you refill more and faster. Product Description There are instructions with this adapter Simple and quick to install - Allows you to refill a small 1 LB propane bottle from your large propane bottle. For maximum fill, place your cylinder container in the freezer for up to 30 minutes before filling. 1. Close the valve of the BBQ propane container. 2. Insert the adapter's nose tip into a 20 to 50 lbs BBQ propane container's fill connection. 3. Turn the adapter counterclockwise for a tight fit. 4. Screw the 1 lb cylinder propane container clockwise into the adapter. 5. Turn the BBQ container upside down and then open the BBQ container's valve. 6. You will start to hear propane transferring to the 1 lb cylinder container. 7. This adapter automatically shuts off gas flow when a certain pressure is reached to avoid overfilling, so sit back and let it refill on its own. 8. When no more sound comes from the container, simply close the BBQ valve and remove the 1 lb propane cylinder container. Please Pay Attention: 1: You must turn your bulk container upside down so that the liquid flows out of it. 2: You must cool down your empty containers so that there is a lower vapor pressure in the empty container than in the bulk container. 3: Your refilled containers will not be completely full, but that's okay because overfilling can cause them to vent gas if left in a hot place.