Quick drainage: Leaves no water accumulation on the floor, the floor drain check device uses 360 degree four-way drainage for rapid water drainage. Easy Installation: The shower drain floor drain plug is very convenient to install with the plug-and-use design, providing you with convenience in daily life. Durable materials: The anti-odor floor drain valve is made of high-quality materials, which makes it sturdy and reliable, and can be used durably for a long time. Uses Various: The Smell Proof Sewer Core is multifunctional and widely used for preventing odors, backflows, blockages, catching hair, etc. Wide Range of Uses: The core floor drain is widely used in basement, laundry room, shower room, kitchen, bathroom, etc., thanks to the large water drainage up to 36L/min. Product Description Description: The floor drain check valve helps you live in a better environment. Features: 1. With plug-and-play design for quick installation. 2. High quality materials for durable, solid and reliable use. 3. Helps prevent odors, sewer backups, sewer blockages, etc. 4. Widely used in bathroom, kitchen, toilet, garage, basement, balcony, shower room and other places where needed. Features: Name: Drain Backflow Preventer Material: PP+Silicone Colors: Black Size: about 6.5cm* 5.5cm * 3.6cm / 2.56in * 2.17in * 1.42in Note: Suitable for most sewer holes with a diameter larger than 3, 7cm and below 5.2cm. Packing List: 1 * Floor Drain Plug Notes: 1. Due to lighting effects and photography angles, there is some color difference in the product, please understand. 2. Due to manual measurement, there is tolerance in the product size.