FeelGlad heat diffuser for gas stove Designed for use with any portable or built-in induction cooktop. The heat transfer rate could be reduced when using non-induction rated cookware that have larger diameters , thicker base sections and large volumes of liquids and solids. You don't have to buy expensive induction pans to avoiding unnecessary costs. It also distributes the heat evenly, which in return improves the quality of your cooking and most importantly the taste of the food. It is mainly helpful when you cook heat sensitive items such as caramel, rice and oats. Heat transfer sound and yellowing of disk can occur for this product in normal usage.