This is a net holder with an anti-odor function, compatible with drain openings of 102mm or less. - Product Name: Ofuro Net Holder - Size: 102mm - Compatible Size: Drain openings 102mm or less - Features: Anti-odor and Clinbell blend - Condition: Unused I realized I had the wrong size after opening the package, so I opened it once but it's still unused. The box has a little dirt on it, but the product inside is fine. I don't plan to use it in my home, so I'd like to give it to someone who can use it.