1、45° quick-loading gas tanks interface, quick locking gas tanks, sealed and airtight. 2、The interface of the stoves is accurate thread cutting, and it has the function of automatic air closing. 3、There are independent gas adjustment switches on both sides. 4、With a handle for easy carrying and remove. 5、There is a folding bracket at the bottom, which can keep the gas output in the gas tank when unfolded. 6、There is a leak-proof rubber-ring in the extension hose. 7、The outer layer of the extension hose is braided with steel wire, and the interior is made of flame-retardant rubber, which is resistant to stretching and has fine airtightness. Four gas tanks can be connected to provide gas to two furnaces. You can also connect only 1/2/3 gas tanks. Features: 45° quick-loading gas tanks interface, quick locking gas tanks, sealed and airtight. The interface of the stoves is accurate thread cutting, and it has the function of automatic air closing. There are independent gas adjustment switches on both sides. With a handle for easy carrying and remove. There is a folding bracket at the bottom, which can keep the gas output in the gas tanks when unfolded. There is a leak-proof rubber-ring in the extension hose. The outer layer of the extension hose is braided with steel wire, and the interior is made of flame-retardant rubber, which is resistant to stretching and has fine airtightness. Specifications: Type: Z54, Z58 (optional) Material: aluminum alloy+brass+stainless steel Fueltank size(fold): 280 * 45 * 50mm / 11.0 * 1.8 * 2.0in Fueltank size(unfold): 280 * 45 * 70mm / 11.0 * 1.8 * 2.8in Extension hose length: 285mm / 11.2in Fueltank weight: 625g / 1.4lb Extension hose: 50g / 1.8ounce Package size: Z54: 280 * 50 * 45mm / 11.0 * 2.0 * 1.8in Z58: 290 * 20 * 20mm / 11.4 * 0.8 * 0.8in Package weight: Z54: 650g / 1.4lb Z58: 60g / 2.1ounce Packing List: Z54: 1 * FuelTank Z58: 1 * Extension Hose Z54: 1 * FuelTank Z58: 1 * Extension Hose