Wide Application: The shower drain check valve is designed for about 35-37mm sewer, suitable for most sewers in your kitchen and bathroom, floor drain. Unique Design: No matter how large the water volume is, the shower floor drain can discharge quickly without water accumulation. Self-cleaning by rotation, stays clean at all times. Easy to use: The floor drain check valve is easy to use and install. Insert the product directly at the end of the drain. When the filter element needs to be cleaned, it can be directly removed from the sewer through the handle. Closed isolation technology: since the shower sewer core is connected to the septic tank underground, prevents sewage or other airways from entering the room through the odor exhaust pipe. Every family needs a high quality floor drain core to prevent foreign objects from escaping. High quality materials: the shower drain plug is made from TPR materials and high quality ABS, which is durable for long life use, reusable and odorless.