Oster Microwave Glass Turntable Plate / Tray 10 1/2" This microwave plate ONLY fits the Oster models listed below. If you are unsure about compatibility please email us with your model number BEFORE ORDERING. Glass turntable plate / tray for smaller size Oster microwave ovens. Measures approximately 10 1/2 inches in overall diameter. Outside diameter of turntable track is 9 1/8 inches.