I purchased this as a set, but I'm only using one, so I'm selling the rest. I'm using it as a bathtub stopper, and it's very convenient. Material: Silicone Brand: MR.SIGA Color: Green Size: 13 width x 13 height cm Diameter 5.1 inches. Fits most drains. Can be widely used in bathtubs, bathroom sinks, and kitchen drains. The MR.SIGA silicone drain stopper seals perfectly without major leaks. Built-in suction cup to secure the stopper during use. It also makes it easy to grab the drain stopper after use. Easy to use and easy to clean. When you need to fill the bathtub or sink with water, just use the bathtub stopper to seal the drain. Wipe with a cloth or wash with mild detergent. The suction cup can be used to store the stopper on a smooth, flat surface when not in use. MR.SIGA's mission: To make housework easier and the world cleaner. If you have any questions, please feel free to contact us.