Package includes: enough quantity for you to use and replace, also it is a good choice to share them with your families and neighbors About size details: the outer diameter of microwave roller ring is approx. 8.7 inch/ 22 cm, the inner diameter of it is approx. 8.1 inch/ 20.5 cm, the wheel of edge is approx. 0.59 cm/ 1.5 cm in diameter, proper size for supporting glass tray Reliable material: these tray rotating support rings are made of high quality material, temperature resistant and decay resistance, safe and reliable to use, durable and have a long life-span Widely compatible: the microwave turntable rotating support ring is suitable for serving as turntable bracket base, widely compatible with most microwaves, good replacement for your broken tray rotating support rings Model Number: Microwave Oven Parts colour:Photo color Material:PPS Package Contents: 4 x Microwave Roller Ring Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.