The whisk is made of food-grade 304 stainless steel, which is safe and green. And our electric milk frother has properly thickened pole, we guarantee to not rust or break, ever. If you want to clean it, just rinse it with water.A new generation of upscale milk frother. Switch is designed in a convenient position, which can work automatically when pressed lightly, so it can be used comfortably, and it won't spill liquid while using. Handle has two-section modular design and ergonomically designed soft touch, the use of ABS material can prevent you from slipping off during use. Load 2 AA batteries (not included) and it will work normally, so you don't have to worry about cords and finding sockets.