UNIVERSAL INTERFACE: Universal sink plug with 4cm diameter, plug for all standard drain plugs, bathroom plugs, sink plugs, drain plugs. SEALING AND LEAKPROOF: 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 high-quality drain plug is perfectly matched with your existing device. It adopts anti-calcification material and anti-limescale layer to ensure good durability. GOOD MATERIALS: The body is made of sturdy and environmentally friendly white plastic, chrome-plated brass, rust-proof, easy to clean and prolongs the service life. PRODUCT SIZE: Brass head with a diameter of 4cm, height adjustable, with a lifting range between 6.5cm and 9cm, simple installation, can be fixed with a nut, and can be adjusted at will within 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. -- Perfectly fit the 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 size of the cap pop-up drain 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 adjusted correctly. 3. If you can't meet your needs, please visit our Amazon store to get more quality help products.