The Isla Gas Ring Reducer distributes heat evenly and eliminates the need to stir food while cooking. This heat diffuser can be used on several different sizes of pots and pans and is made from black enameled cast iron. It is meant to be used with gas stoves and helps save energy by channeling heat toward the central opening. The gas ring reducer helps keep the flame from directly hitting your smaller pots and pans and keeps them looking new. The gas ring reducer can be alternatively used as a trivet, and is also great to take along on a camping trip and can be used with smaller, thinner pots and pans on many wood burning backpacker stoves. Measures 5-inches. By Ilsa.