Outer Diameter: 30 mm / 1.2 inches; Inner Diameter: 13 mm / 0.5 inches; Color: Gold; Material: Copper; Plastic; Applicable Opening Size: 22 mm - 24 mm / 0.86 - 0.94 inches; Package Included: 3 x Round Sink Ring Advantage: The overflow cover is made of copper, with fine workmanship, a smooth surface, corrosion resistance, easy to clean, and durability. It features a stylish and bright appearance, equipped with decorative overflow holes that prevent clogging. The coating adheres well, resulting in a delicate and uniform color. Wide Application: The overflow ring is widely used for sinks, bathtubs, bidets, and washbasins. Suitable for homes, offices, kitchens, bathrooms, dormitories, hotels, shopping malls, factories, and various other locations. Instructions: Easy to install, just push it into place, no tools required. Please don't worry about pushing it in, it won't scratch your pan. NOTE: The sink overflow cover fits a 22mm/0.86in to a 24mm/0.94in hole, please make sure it fits your sink before purchasing.