1.MATERIAL: Our thermocouple for gas fireplaces is made of copper, gas log thermocouple is high temperature, gas thermocouple kit are ideal for your home appliances. It can solve problems such as water heater indicator light not always on, damaged thermocouple causing the water heater not to heat up, and so on. 2.EASY TO USE: The thermopile gas fireplace has a durable body structure and high sensitivity. The 36'' thermopile is equipped with bare wire head, you can install any model you need. Positive positioning for quick insertion. 3.GAS FIREPLACE THERMOPILE SIZE: Gas stove thermocouple flame failure device, the universal thread thermocouple probe length approx. 7 cm / 2.8 inches, width approx. 1 cm / 0.4 inches, total length approx. 36 inches. 4.WIDELY APPLICABLE: This universal gas thermocoupler sensor thermopile also called as thermogenerator or pilot generator, the thermocouple for fireplace normally installed on plilot assembly used for fireplaces, frying, heating appliance.