Universal pop-up basin sink: Made of high-quality copper material, chrome-plated surface, solid brass pop-up core has good elasticity and resilience, resistant to detergents and oils, can seal the sink hole and drain quickly. High quality: The sealing gasket adopts high-quality silicone ring, which is not easy to age and has better sealing. Press the sink plug to prevent waste from entering the pipe. Intimate design: With spring mechanism and spiral propeller, just press the sink plug to drain quickly. The slotted bolt assembly is removable and easy to clean. Exquisite appearance: The sink cover adopts exquisite chrome appearance, which brings a comfortable touch. The elegant chrome cover plate has a smooth surface and shines in your basin sink! Fixed accessories: The spring-type drain plug is suitable for sinks with a hole diameter of 36-39 mm. Please ensure the hole diameter before purchasing. Universal Explosion-proof Drain Strainer Bathtub Tool with Bounce Core Sink Drain Plug - High-quality brass material, not easy to rust - Suitable for most standard accessories - Spring mechanism, thread is easy to pop out - Function: Prevent waste from entering the pipe and prevent pipe blockage. - Easy installation: Easy to screw on and off. - Good quality: Made of high-quality materials, lightweight and durable. - Usage: Suitable for most sinks, basins. - Replacement: Can be used as a replacement part for basin drain plugs. Specifications: Diameter: 6.6 cm Thread size: M8 Bolt thread: M8, M16 Height: 3.7 cm Closed height: 2.8 cm Color: Silver + Gold Material: Zinc alloy, brass Package includes: 1 bolt + 1 knob