Drain Backflow Preventer is made of durable ABS, anti-corrosion, wear-resistant for long time use Sewer Core can be placed directly on the drain, easy to install and remoce Floor Strainer Plug will effectively protect your kitchen, bathroom, garage, basement and toilet from unpleasant smells This Floor Drain Core is suitable for drainer with hole diameter between 35mm and 52mmm Floor Strainer Plug can effectively deodorize, bringing a clean and hygienic invironmnet Due to manual measurement, please allow for slight errors. Please make sure you don't mind the previous bid. The color may vary depending on the monitor, please understand. Attention: Hello, please pay attention to your shipping address when purchasing products. If your shipping information (such as name, street, house number, doorbell/email without a name, etc.) is incorrect, the order will not be delivered correctly