UNIVERSAL SIZE: This basin is a universal stainless steel product with spring core, can be used for different types of basin drains. The inner diameter of the sink strainer is 33.5mm. Suitable for drain holes with an inner diameter of 34-38mm.Easy to install: No tools required, it can be easily installed with bare hands. Just remove the old bounce core and install a new bounce core. Anyone can install the pop-up drain due to its simple structure. If you want to use it for larger diameter, you can use the rubber ring we provide to increase the inner diameter of the sink plug. Premium Material: The drain plugs are mainly made of Premium stainless steel and thickened copper - Durable, anti-rust, anti-crack. With good bounce and rebound resistance, the water drains quickly and closes quickly.Built-in Strainer: The sink stopper has an anti-blocking basket inside, which can collect the hair and prevent channeling, allowing for efficient filtration unlike push-button plugs. Suitable for bathtub, bathroom and kitchen sink, etc. Two-way switch: The pop-up design of this drain strainer switches the uncomfortable way of drainage. It is 2 in 1 tub plug and filter Just gently press the top cap down to switch the 2 modes including water holding and water draining. Plug sink strainer Pop-up spring loaded sink strainer drain plug, universal sink stopper replacement for bathroom and kitchen. Features Quality hardware Bounce core Anti-clogging design Leakproof design Quality material Made of 304 stainless steel and brass rebound core, quality and solid material, anti-explosion and anti-cracking. Operation of the push button Good spring and rebound force, quickly seal and drain water with one press. Anti-clogging design Built-in basket strainer, with porous filtering, objects that do not penetrate not in the drain, such as jewelry, rings, etc. Waterproof design Silic gel seal e thickened, no need glue, oxidation resistance and anti-leakage. Easy to install Just replace the old one Insert the rebound core to complete. Pull out by pushing it in to act as a bathtub stopper Step 1 Just replace the old one. Step 2 Insert the rebound core to complete. Step 3 Pop up by pushing it to act as a stopper. Universal sink stopper Product specification Product specification Type: Push type (pop-up) Material: Copper + Stainless Steel + Silicone