Kustar sink deodorizer with check valve sink drain adapter gasket ˜50 sink anti odor lights ˜50mm diameter cotton it is a practical product used to prevent bad smells and insects by attaching it to the mouthparts of the objects check valve, it prevents sewage backflow where and how to use it it can be used in sink connections, sink connections, washing machine and dishwasher connections r. What problem does it solve? what is the advantage the product not only prevents bad smells from spreading to the surrounding area but also prevents insects from entering from the shaft. with its check valve structure and flexible plastic material, its suitability for 50mm any wood is its biggest advantage who can use it if bad smells rise from under the sink in the kitchen, you can use it. It is a product that you can always need. easy to assemble. what's included in the package: 1 adapter seal with check valve in a carton. a maximum of 10 units of this product can be ordered. swordslife reserves the right to cancel orders of more than 10 units. more than 100 stocks will be offered for sale at a promotional price. buy at the retail price of the product you reviewed. ±c will be determined. Improved version for clearer understanding and better search visibility. Suitable for users seeking detailed and reliable product information.