Material: bouncing copper core + silicone sealing ring + ABS electroplating body + stainless steel edge cover Basin bouncing filter element can be used for hacked, bouncing , one filter basket,plug and play, no need to change the whole drainer, only one bounce core is needed Multi-layer electroplating is durable as new, electroplating is resistant to corrosion corrosion, not easy to rust, easy to clean, water storage does not leak, Multi-layer silicone ring design, water storage more leak-proof Multi-perforated basket prevents clogging, multi-hole design, rapid drainage and intercept foreign objects at the same time, high-speed drainage, multi-hole design, rapid drainage to intercept foreign objects without delay Easy and easy to install in two steps, girls can also install easily, remove the old drainage core or cover, insert the new bounce core to complete the installation, installation is simple, no need to waste time studying its installation process, save time for your life