[Premium All Metal Material] Pop-Up Stop is made of rice and the tail part is stainless steel; Industrial leader finish provides durability and reliability in daily use .[ Spring loaded push button] To push the pop up cover to drain or fill the water; To revers the clockwise to clean the upper lid and to remove the stopper to remove the stop, will not click .[ Aviot leaking design] Pop Up Sink Drenage Stop 2 comes with soft silicone gaskets; Please make sure that the gaskets have been brought to the correct position (please see the product picture or installation instructions) .[ Most overflow sinks] Design for sinks with sink containers or overflow holes; The sink hole fits the diameter: 1.65 inches; Max.ink thickness: 1.77 inches .[ satisfied warranty] We a one-year manufacturer warranty for our first-class bathroom sink drainage stop, if you have any questions or if you need any help, do not hesitate to us through our or after-s e-mail, we will answer you within 12 hours; In the meantime, 20: 30-11.30 ( time), 1: 30-6: am (US time), we work between the questions asked, we can answer within 5 minutes