Premium Material: Our pop-up drain plugs are made of copper core and ceramic coating material with smooth surfaces and edges, which are reusable, rust-proof, sturdy and durable for home use.long term.Easy to install: plug and play.Simply remove the old sink stopper and plug in a new sink strainer.Need to push the sink stopper to drain water quickly, adopting spring mechanism and screw thread.Leak-free design: Brass bouncing cores have good bounce and bounce resistance, quickly seal and drain water with one press, can be used for a long time without leaking.Practical design: The pop-up sink stoppers can well prevent waste such as hair and food residue from entering the pipeline, to avoid clogging of water pipes.Wide Applications: This click-clack pop-up stopper is ideal for standard size bathroom or kitchen sinks, suitable for bore diameter 36-39mm/1.4-1.53inch.