Kloud City White 8.2&ldquo; Round Removable Plastic Plant Dolly, Durable Plant Pot Tray, Planter Plant Pot Saucer Caddy with 3 Universal Wheels The tray outer diameter is 10 inch, inner is 8.2 inch.Bearing capacity is about 33 pound or so. please press it strongly when install the wheels, after hearing "bang", it is well installed. Easily move your potted plants and change your garden design.Ladder inner design makes plants with plant pot with bottom hole would be well ventilated Provides plants with optimal lighting throughout the day by wheeling them into/out of the sunlight Please confirm that you make the order from the original seller "Kloud City",otherwise other sellers may offer you different saucers with that in our photos,such as smaller size or wrong color and so on. Please pay attention.