Basin Sink Waste Material: The basin sink is made of high quality copper, fine workmanship, corrosion and rust resistant. Gaskets are made of high quality silicone, anti-aging and anti-cracking, have stronger sealing performance. Easy Installation: Automatic pop up with overflow bung can be installed in a few steps completely without use commercial sink instructions due to its simple and convenient structure. 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 one press. 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 Use: The drain pan is suitable for all commercial sinks, with a standard installation dimension of 1 inch, good for kitchen and bathroom. Please pay attention to the installation size of your sinks before purchase.