Microwave Oven 6.9" Inner Dia Plate Tray Rotating Ring Support Roller Product Name : Tray Support; Designs with three small wheel, convenient to keep your food revolving in the microwave oven. Made of PPS material, durable and have a long life-span. Great replacement for your broken one. Product Name : Tray Support; Designs with three small wheel, convenient to keep your food revolving in the microwave oven. Made of PPS material, durable and have a long life-span. Great replacement for your broken one. Product Name : Tray Support; Designs with three small wheel, convenient to keep your food revolving in the microwave oven. Made of PPS material, durable and have a long life-span. Great replacement for your broken one.