MATERIALThe Pop-Up Drain is made of stainless steel and brass. Anti-rust, anti-crack, integral molding. Good rebound resistance, fast sealing and draining water with one press Supplied with a gasket thickened silicone. EASY INSTALLATIONThe sink drain can be installed easily without using any tools due to the simple and convenient structure. All you have to do is remove the original drain plug by hand, insert our plug sink and press the spring switch to easily complete the sealing and filtering. BUILT-IN FILTERSAnti-Clog Drain Filter Unlike ordinary push-button drain, this sink drain has an anti-clog basket strainer inside, which is great for cleaning dirt and can prevent jewelry, rings, dirt and other objects from going down the drain pipe and avoid clogging the drain pipe. POP UP VALVESink Plugs With the solid brass pressure spring, the sink plug can be closed and opened in a second! No more clogging and water leaks! The pop-up design overturns the traditional, inconvenient sink stopper! Just gently press the top cap to switch between 2 modes. APPLICABLE SIZEPop Up Sink Stopper Fits 28-36mm diameter drains, outer diameter: 62mm, inner diameter: 35mm. Choose the right drain size for your home's floor drain.