The Whirlpool W10679313 Ring Turn for Microwave helps the turntable rotate smoothly for more even heating during cooking. This replacement ring turn is positioned beneath the microwave glass tray and supports its movement as the turntable motor operates. Its small wheels or rollers allow the tray to rotate steadily around the microwave cavity, helping distribute heat more consistently... https://www.partsmelange.ca/whirlpool-w10679313-ring-turn-for-microwave