1Plastic shell: The outer layer of this piezoelectric lighter is made of plastic, which can effectively insulate the ignition while providing you with safety. 2Main function: This piezoelectric lighter is mainly designed to light gas, stove, oven, heater, fireplace, etc. It can also be widely used for various outdoor activities, such as barbecue, camping, etc. 31 out 2: Piezoelectric lighter can be used as 1 out 1 and 1 out 2. It comes with ignition needle, 1 meter cable. The ignition distance is 56mm. The mounting hole is 18mm. 4Wide compatibility: Works with all propane gas and natural gas equipment. You may need to make some adjustments during installation and it does not fit all current mounting holes or cable lengths. 5Push button and no battery: No batteries required, just press. One push to generate spark. But make sure to connect the notched wire or touch the fixed point.