Increased the distance between the furnace and the gases tanks. Adopt high pressure tube, it is more convenient and safe to use. With valve, can adjust the size of the air tanks. Features: Made of high-quality aluminum and stainless steel with the features of strong, anti-rust, sturdy and practical, has a long using life. Fine workmanship and thread design make installation more convenient. Increase the distance between the furnace and gases tanks, adopt the high-pressure pipe, it is more convenient and safe to use. Stainless steel braided, fine flexibility and fine resistance to twisting. Suitable for outdoor cooking, camping, hiking, backpacking, fishing, picnic, BBQ, travel, etc. Equipped with reverse irrigation base for liquid output in reverse irrigation state. Specifications: Type: Z21-70, Z21-25 (optional) Material: alumina high pressure rubber hose is surrounded by steel wire Applicable gases tanks: butane-gases tanks, gases tanks for high mountain areas, propane gases tanks Z21-25: Pipe length: 250mm Item weight: 73g / 2.6ounce Package weight: 100g / 3.5ounce Z21-70: Pipe length: 700mm Item weight: 100g / 3.5ounce Package weight: 120g / 4.2ounce Package size: 250 * 200 * 50mm / 9.8 * 7.9 * 2.0in Packing List: 1 * Stoves Adaptor