【Made of 304 Stainless Steel & Brass Core】: Unlike other stainless steel products, we have carefully selected materials with superior (rust resistance, corrosion resistance, and heat resistance). This ensures a long lifespan for your sink drain strainer. The built-in high-quality copper core provides excellent corrosion resistance and structural strength, ensuring that performance does not degrade even after long-term use. 【Solve Your Sink Drain Problems】: Are you troubled by common drain problems such as (hair clogs, water stains, odors, and insect intrusion)? This product solves all of these problems! The sink hair catcher is removable and effectively catches hair and small items like rings before they enter the drainpipe. Furthermore, when water is not flowing, the valve at the bottom automatically closes, reliably blocking the backflow of odors and the entry of insects! 【Easy Installation Kit】: The pop-up drain stopper has a simple structure and requires no tools. Simply remove the existing drain fitting and set the new pop-up drain fitting in the drain opening to complete the installation. Water can be stored and drained with one-touch operation. Anyone can easily install it. A large rubber gasket is included to effectively prevent dirt from adhering by sealing the rubber and metal surfaces. Parts can be disassembled and cleaned at any time. 【Wide Compatibility & Upgraded Design】: The sink drain strainer has expanded the diameter of the lower drain opening to improve drainage speed. This product is compatible with diameters of approximately 33mm to 45mm and applies to 99% of sink drains in washbasins, bathtubs, bathrooms, bathroom sinks, and vanity units. Simply remove the existing drain stopper and install this product for immediate use. 33mm-45mm Inner Diameter Applicable Sink Pop-up Drain Stopper Hair Catcher 【Industry New Development・SUS304 Stainless Steel・Brass Core・Expanded Drain Diameter・Accelerated Drainage】Sink Drain Strainer One-Push Open/Close Clogging Prevention Easy to Clean Odor-Proof Insect-Proof Easy to Remove Drain Hair Catcher Sink/Bathtub/Bathroom With Rubber Ring Japanese Instruction Manual (Silver)