Dear customer, Thank you for choosing our products. If there is any problem with our products, please contact us through the order information. We will be happy to serve you and solve it for you as soon as possible within 12 hours, thank you Premium Material: The basin sink is made of high quality copper, fine workmanship, corrosion and rust resistant. The gaskets are made of high quality silicone, anti-aging and anti-cracking, have stronger sealing performance. Unique Design: Slotted basin sink waste has a unique design that prevents overfilling, the solid brass bouncing cores have good rebound and rebound resistance so water can quickly seal and drain water with a single press. Easy Installation: Automatic pop up with overflow can be installed in a few steps completely without using commercial sink instructions due to its simple and convenient structure. Easy to Clean: Large retractable chrome pop-up drains are easy to clean, all components can be easily removed. You can easily unscrew the top drain pressure cap and clean it with a rag. No hair and encrustation. Wide Usage: The drain pan is suitable for all commercial sinks, with a standard installation dimension of 1 ", good for kitchen and bathroom. Please pay attention to the installation size of your sinks before purchase.