Quantity :1For maximum filling, place your cylinder tank in the freezer for up to 30 mins before filling it.Screw in the 1 lb cylinder propane tank clockwise into the adapter.Shut to BBQ propane tank.Type: QCC1 regulator Material: copper alloy & rubberGreat for camping or cooking outdoorSize: 5x7cm / 1.97''x2.76''When no more sound is coming from , simply shut the BBQ and the 1 lb propane cylinder tankFits all 1 lb. small bottles and refill easily1 x Adapter (only propane tank refill adapter)Color: As the pictures shownWell-constructed, built Heavier, Bigger, and SaferTurn the adapter hand heel grip clockwise to a tight fit.Stay clear of flames and sparks.Easy to install with hand heel grip - for tighteningYou will begin to hear the propane gas transferring into the 1 lb cylinder tank.Insert nose tip of the adapter into a 20 to 50 lbs BBQ propane tank fill connection.Cuts off gas flow automatically when pressure is reached (rubber ring allows for proper seal)Built in feature that will ensure you NEVER over-fill your smaller tank.Safest and Easy to refill in seconds with NO TOOLS required.This adapter will allow you to use a small 1 LB propane cylinder with your standard BBQ Grill.Great for Tailgaters, Caterers, Campers, And anyone that cooks on the grill/has cookouts.Brand newTurn BBQ tank upside down then open BBQ tank .Due to the highly gases, you MUST be outdoors to refill your 1 lb cylinder tank.The regulator in the adapter will automatically cut off the flow of gas when a certain pressure is reached to avoid overfilling so sit back and allow it to fill on its own.