90 Degrees Design: propane elbow refill adapter with ON/OFF control valve is easy to install and no tools required, and it with hand-wheel grip for tightening, you can easily connect your large cylinder to 1LB propane tank. Additional 1 LB Propane Bottle Cap: The 1 LB propane bottle cap is useful for your camping stoves, home applications, barbecue, propane heater or others equipments that use 1 lb propane tank. You don't need to spend extra money to buy the cap. How to Refill the Gas: Refill the 1LB camping bottle with propane gas by using a 90-degree propane filling adapter, you should turn the large propane tank upside down and place it securely in the corner of the dining table so the liquid can flow out. Upgraded With Gauge For Accurate Reading: Specially designed with a gauge at the side connect with 1lb propane tank, our propane refill adapter allows you to read and monitor the gas volume in your 1lb propane cylinder more accurately. Luminous pointer and gas level indicator make it easy to read even in the dark. Attention: Because the gas is highly flammable, you Must refill your 1 lb cylinder tank out of the door and stay away flames and sparks for safety. color:As shown Material:brass Package Contents: 2 x adapter