Wide Application: The shower drain check valve is designed for drains of approximately 35-37 mm, suitable for most drains in your kitchen and bathroom, floor drain. Unique Design: No matter how large the water volume, the shower floor drain can drain quickly without water accumulation. Self-cleaning by rotation, keeps clean all the time. Easy to Use: The floor drain check valve is easy to use and install. Insert the product directly into the end of the drain. When the filter element needs to be cleaned, it can be removed directly from the drain via the handle. Closed Isolation Technology: Since the shower drain core is connected to the underground septic tank, it prevents sewage or other airways from entering the room through the odor drain pipe. Every family needs a high-quality floor drain core to prevent foreign objects from escaping. High-Quality Materials: The shower drain stopper is made of high-quality TPR and ABS materials, which is durable for long-term use, reusable and odorless.