Product Overview - Includes a 3-foot hose, an on-off control valve, and a tank gauge level indicator with a dial for easy gas level monitoring and leak detection. For added convenience, it comes with a 1-lb propane bottle cap. Material Quality - The hose and its components are made of 100% solid brass and rubber for durability and resistance to environmental factors. This propane hose ensures airtightness and stability. Compatibility - This gas hose supports a high-pressure rate of 350 PSI and connects to a 1-inch x 20 female throw-through thread. It can be filled with a 1-pound camping bottle and directly connects to a 20-50 lb propane tank, suitable for a variety of outdoor and domestic applications. Installation and Use - The hose easily connects to the propane tank. The control valve regulates the filling process, and the adapter features an overflow protection device. To use, connect the QCC1 adapter to your tank, turn on the gas, and then connect the 1-lb adapter to your small tank. Compatible with all refillable green 1 lb propane cylinders, easy and quick to fill, perfect for camping, tailgating, heating needs, outdoor cooking and more. Color:Black Material:Rubber + Copper Package Contents: 1 * Propane refill adapter hose Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.