Features: The adapter converts into a kind of screw flat fuel tank for propane gas appliance. It is possible to convert a propane gas device that originally used propane gas into a used flat tank, such as an oven, spray gun, integrated gas furnace, split gas furnace, and heating furnace. Made of aluminum and copper alloy, strong and durable. Lightweight and portable for camping, hiking, fishing, mountaineering, picnic, etc. Note: First, install the furnace or other propane gas appliances in a good connection, and finally connect with the gas tanks to avoid air leakage. Adapter only, others are not included. Specification:Model: Z29-30 / Z29-105 / Z20 (Optional)Material: Aluminum Alloy + CopperSize: 3*3*3.2cm/1.2*1.2*1.3inWeight: Approx. 36g/1.3oz Package List:1*Adapter