No need to buy extra flat tanks, you can use the gas stove adapter to refill your gas tank from liquefied gas cylinder, saving a lot of time. No air leakage, safe to use. Lightweight and portable, this rubber pipe is ideal for most kinds of outdoor events. This product has good flexibility, and easy for folding up and carrying. It is made of high-quality copper, iron, zinc alloy and rubber material. The length of this product is 50cm. This product is perfectly suitable for camping, hiking, backpacking, and more. Item Name: Gas Refill Adapter Material: Copper, Iron, Zinc Alloy, Rubber Features: Leakproof, Heat-resistant, Reusable, Safe Size Details: Length: 50cm/19.69"(Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Gas Refill Adapter