With non-sharp edges at both ends, this pan ring is ideal for pans with round bottoms. Universal size suitable for gas stoves. For round bottom woks, the wok should be smaller than the diameter needed. The flat bottom wok fits snugly and absorbs all the heat. The gap disperses heat from the entire pan and prevents food from burning. Since the space is small, the flat bottom and the flat coil inflate to suppress the movement of the pot The cooking structure is durable, flat and stable on the sides. It can be used to support a wok during normal cooking. This ring features a small high speed electric pan that heats the wok with the narrow side down. It consumes electricity, the heat rises and falls quickly, and cooking food is like a gas stove. All coils are covered so that all the energy can be used. The ring fits the outer coil perfectly.