Details: Material: Copper Alloy and Stainless Steel Composition Easy to install, handle grip hand squeeze Fits all 1 lb small bottles and refills easily Automatic shut-off of airflow when pressure is reached (rubber grommets ensure proper sealing) Ideal for camping or outdoor cooking Features QCC1 built-in safety function regulator , which ensures that your small tank never refills No tools required, filling in seconds is safer and easier. This adapter allows you to use a small 1 lb propane gas cylinder with a standard grill, Great for tailors, caterers, campers and anyone who cooks on the grill/has a cooker. CAUTION Due to the highly flammable gas, you must refill the 1-pound gas cylinder canister outdoors. Keep away from flames and sparks. For maximum filling, place the canister in the freezer for up to 30 minutes before filling. Instructions: 1. Close the valve on the BBQ propane tank. 2. Insert the nose tip of the adapter into the 20 to 50 lb BBQ propane tank fill connection. 3. Turn the adapter heel handle clockwise for a snug fit. 4. Screw the 1 lb propane tank onto the adapter. 5. Turn the barbecue cylinder upside down and open the valve of the barbecue cylinder. 6. You will begin to hear the propane gas transfer to the 1 lb cylinder tank. 7. The regulating valve on the adapter will automatically cut off the air flow when it reaches a certain pressure to prevent over-inflation, so as to realize automatic inflation. 8 When the jar stops making noise, simply close the grill valve and remove the 1lb propane Can size: (1cm=0.394 inches) Package includes: 1*Adapter Notice: Due to differences in different monitors, the image may not reflect the actual color of the item. Thanks! Details: Material: Copper Alloy and Stainless Steel Composition Easy to install, handle grip hand squeeze Fits all 1 lb small bottles and refills easily Automatic shut-off of airflow when pressure is reached (rubber grommets ensure proper sealing)