1.Efficient and costeffective: With this gas cylinder filling adapter, you can easily refill your small propane tanks from a larger one and save money on buying tanks. You don't have to worry about running out of propane on camping trips or when cooking outdoors. Enjoy uninterrupted use of your gas stove with a filled propane supply. 2. and reliable design: This propane refill adapter hose is made of copper, aluminum alloy, and rubber materials and is durable and longlasting. It ensures a secure connection between the propane tanks, prevents leaks, and ensures a refilling process. Enjoy the assurance that your propane refill adapter is designed for repeated use. 3.Versatile compatibility: This gas adapter connecting hose is compatible with a variety of gas stoves and devices that use small propane tanks. It provides a convenient solution for refilling tanks used in camping, grilling, tailgating, and other outdoor activities. Ensure a continuous and reliable fuel source everywhere. 4.Gas adapter connecting hose with ONOFF control valve Propane refill adapter hose Copper for Outdoor Camping