Convenient to UseSilicone front hook to prevent sliding away, double pour spouts both sides, flat bottom and silicone heat-resistant handle stayed cool while over heat. And silicone spatula is great tool Mix or stir thick batters, yet be flexible enoughfor scraping sauces or scrambling eggs. Multi-Functions & WIDELY USE The 400ML is more thicker, You can put this 400ml double boiler on top of the big one, The working principle of using the lower layer of water vapor to conduct heat better, so it will be more fast for melting or steaminga small amount of chocolate, butter, cheese and heated sauces etc. All-round compatible & Easy to clean The double boiler pot is adaptable for all types of kitchen tops, including induction cooktops, electric, ceramic, and halogen kitchens.