Are you search of some backflow preventer for sewer? This item can be your unmissable choice. Made from silicone materials, with good texture for lasting use. Easy to install and remove, a practical shower drain core for blocking odor, cockroaches, , and so on. Features - Color: White -Material:Silicone - Size: 8.50X7.50X7.50cm/3.34X2.95X2.95in - This sewer drain cover is suitable for kitchen sinks, washing machine drains and other types of drains. - Practical floor drain backflow preventer can effectively prevent the spread of odors from the drain, keeping the air fresh. - Made from silicone materials and good workmanship, the drain backflow preventer can be used for long period of time. - The drain cover for sewer fits tightly with the drain, it from slipping, you can use rest assured. - Light weight, compact size, easy to use and install, silicone shower drain core brings you more convenience. Package list: 5 x Sewer Drain Core