【Advanced Milk Frother】The steam milk frother uses advanced high-pressure steam technology to froth milk. High-pressure steam quickly and easily froths milk to heat coffee or tea. Note: A heating pot is required (not included). 【Three-hole nozzle head】The fine tapping nozzle of 0.8 mm x round 3 holes has a large air output, which can block pressure and guarantee sufficient steam, increase the duration of pressure release and produce thicker milk foam. 【4 bar valve】Safety pressure relief valve, when the air pressure reaches 4 bar, it will automatically release pressure. 【Material】Stainless steel pressure gauge, beautiful and durable ultra-thick aluminum alloy shell, ensure air tightness and safe use, upgraded universal head, more flexible adjustment angle. 【Heating method】Use open flame or electric heating to turn the water in the pot into steam.