This is a tray plate that sits under the standard tray. The plate is 3.5 inches across with a center opening of .75 inches. Please make sure this size tray will fit over the entire head part of your stem. The tray works for Jr. Hookahs (Product # Ch29), Bubble Hookahs and most Pumpkin style hookahs. They are all mixed color beads, so we have categorized them by the dominant color. Color options: purple, black, pink, red and green.