The Rotating Ring Assembly is an OEM part for GE microwaves. It supports the microwave turntable, enabling it to rotate during operation to ensure even cooking and heating of food. This ring is approximately 10 inches in diameter. Causes of a bad rotating ring assembly can include wear and tear from regular use, accumulation of food debris or grease that hampers movement, or physical damage such as cracks or warping from overheating. Symptoms of a bad rotating ring assembly include: The turntable not rotating Uneven cooking or heating of food Noisy or jerky movement of the turntable Visible damage or warping of the ring This GE replacement part is also compatible with Hotpoint, RCA, and some Kenmore models.This part fixes the following symptomsTray won't turnWB06X10705 (AP3993991) replaces WB06X10858, 1262343, AH1480805, EA1480805, PS1480805, WB06X10665.