Sink plugger with a bounceup core design for quick and easy waterflow control. A simple press seals or releases the drain, compatible with most standard drains having an opening of 3440 mm for reliable daily use. Drain filter built around an allcopper bounce core and thick copper material, paired with ABS construction to resist erosion and maintain smooth operation without sticking over time. Sink stopper features an airtight builtin spring mechanism that enables sensitive pressing action while preventing leaks, delivering efficient sealing for wash basins and tubs. Color options include rose gold, gray, and silver finishes to match various faucet styles and bathroom decor, offering a clean, modern look that blends into any home environment. Materials and durability: copper core with ABS housing provide corrosion resistance and long lasting performance, while maintaining smooth, reliable operation across common household use. Compatibility and installation: designed for standard drains with 3440 mm openings, making it suitable for most kitchen and bathroom setups without special tools. Performance benefits: quick sealing and releasing action, strong airtight seal to prevent leaks, and erosion resistance for extended use in daily routines. Use scenarios: In the kitchen sink to quickly fill a pot or wash dishes, then seal the drain with a single press for controlled drainage. In the bathroom sink during brushing or shaving to contain water, avoiding splashes and leaks. In a tub or wash basin to seal for soaking or bath preparation, then release to drain without hassle.