Universal Basin Popup Drain Filter Sink Drain Plug made of galvanized stainless steel body and copper core- durable, anti-rust and tarnish proof Built in rubber rings ensures 100% percent leakproof, keeps stability and doesn't tilt when you push the button 2 in 1 design (stopper and filter) prevents hair and valuables from flowing down in the bathtub and prevent the sewer from stuck Easy installation - just takes out the old one and inserts the core to complete it and no tools needed Universal fits for most sink holes which inner diameter in 34-40mm/1.34-1.57 inches Specification: Material: Copper, Stainless Steel, Plastic Fits for sink hole diameter: 34-40mm/1.34-1.57 inches Stopper Size: 4.2x3.4cm/1.65x1.33 inches Package Includes:(6 Pack) 1 Piece Sink Drain Filter Stopper