Sink Plug: The copper surface and adjustable screw of the plug have high hardness. The bathtub plug is made entirely of brass. It is corrosion-resistant, robust, and retains its shine for a long time. Material: Made entirely of brass, resistant to corrosion and rust, for greater durability. The O-ring is made of high-quality silicone, tear-resistant, and provides an optimal seal. Easy Installation: The flip-top plug separates into two parts, making it easy to install and clean. Simply insert the plug into the sink drain hole and twist it to secure it with the screw. Scope of Application: This flip-top plug has a wide range of applications, being suitable for bathtubs, sinks, kitchen sinks, etc., preventing debris from entering the pipes. Package includes 2 sets (2 plug bases + 2 cores). If you have any questions, please feel free to contact us.