Material: Sink drain made of stainless steel and brass, the chrome finish which can effectively prevent corrosion and rust caused by domestic sewage and oil stains, anti-abrasion, they are durable. After use, please dry the surface as much as possible to avoid the formation of scale. Easy Installation: Quality material and easy to install, assembly and disassembly in seconds without the need for special tools. You can easily unscrew the cap of upper pressure of the sink stopper and clean it with a cloth. Washbasin drain without overflow length 78mm, width 63mm, suitable for most countertop and undermount sinks between 42mm in diameter ,standard installation size of 1 ¼". Perfect sealing: Solid brass compression spring, which has good resistance to rebound and rebound, quickly seals water and lets it flow out with one press. Sink strainer with 2 high quality double seal silicone gaskets, soft and durable, with superior sealing performance to prevent water leakage. Wide Application: This sink drain is not only suitable for families but also for various bathrooms and restrooms such as restaurants, bars and hotels. Please pay attention to your sink installation size before purchase and without overflow hole. Attention: The sink hole should be regular round, the edge should be smooth and flat. If the basin hole is crooked and frosted, it will leak after you install this drain.