Wide Application: The shower floor backflow preventer is designed for around 35-37mm sewer, suitable for most of your kitchen and bathroom sinks, toilet floor drains.< /p> Unique Design: Regardless of the volume of water, the shower floor drain can discharge quickly, drain quickly without water accumulation. Self-cleaning by twisting to stay clean at all times. Easy to use: The floor drain backflow preventer 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 directly removed from the drain through the handle. Closed insulation technology: since the core of the shower drain is connected to the underground septic tank, prevents sewage or other air from entering the room through the odor drain pipe. Every family needs a high quality floor drain core to prevent foreign matter from draining. High quality materials: The shower floor drain plug is made from High quality TPR and ABS material, which is durable for long service life, reusable and odorless.