Material: The black sink drain without overflow is made of high-quality brass, which is durable and not easy to rust. All materials are quality guaranteed. The materials we have been using for a long time are harmless and environmentally friendly.EASY TO INSTALL: The black sink drain fits the sink and does not overflow. Sink stopper with standard G1¼" connection, perfect for all commercial sinks. Complete installation in just a few steps, no tools required! Easy to open and close. Smooth operation button with tight seal. "Water." Click-and-click function: Thanks to the pop-up mechanism, you can open and close your new basket with just one click. No more worrying about the diverter cover getting stuck and leaking. Robust construction: Drain valve with robust construction, solid brass compression spring, with good rebound and rebound resistance, seals water quickly and drains with a single press. New high-quality pop-up drain stopper with overflow hole. Wide range of applications: This drain valve is not only suitable for households, but also for various bathrooms and toilets such as restaurants, bars, hotels, etc. This drain valve sets the highest standards in design and innovation, blending harmoniously into every basin, sink, sink and sink cabinet without overflowing.