UNIVERSAL INTERFACE: Universal 4cm diameter basin plug, plug for all standard drain plugs, bathroom plugs, sink plugs, drain plugs. SEAL AND WATERPROOF : The pop-up sink stopper has a good rubber sealing ring and 4 side wings, which can be perfectly fixed in place without shaking and preventing peculiar odors. CORROSION RESISTANCE: The stopper high quality drain pan is perfectly matched with your existing device. It adopts anti-calcification material and anti-limestone layer to ensure good durability. GOOD MATERIALS: The body is made of sturdy white plastic and environmentally friendly, of chrome-plated brass, rust-proof, easy to clean and prolong the service life. PRODUCT SIZE: Brass head with a diameter of 4cm, adjustable in height, with a lifting range between 6.5cm and 9cm, simple installation, can be fixed with a screen or, and can be adjusted at will in the range of expansion and contraction. Highdas High quality materials and perfect craftsmanship. -- The materials we use are particularly durable and extremely resistant to corrosion by lime and rust. -- Perfect fit European main drain plug. -- This universal 4cm sink stopper fits almost all sinks and bidets. PRODUCT DETAILS: Material: High Quality ABS, Rubber, Brass Quantity: 1PCS Size: 4cm in diameter, adjustable between 6.5-9cm (as shown in the picture) TIPS: 1. Please confirm the pop-up drain plug size before purchasing. If you have any questions, please feel free to contact us. 2. If there is water leakage during use, please check whether the length of the fixing nut is properly adjusted. 3. If you can't meet your needs, please visit our Amazon store for more quality helper products.