General description The Sink Drain Kit with Odor-Resistant Expandable and Flexible Drain is designed for perfect compatibility with bathroom sinks featuring 3.8cm, 3.8cm, and 5cm diameter drain holes. It is suitable for sinks without an overflow but not for those with an overflow. Technical specifications Compatible with drain holes: 3.8cm and 5cm Material: Stainless steel, PP, ABS Color: Gray Installation Easy installation with no tools required Flexible and expandable design allows for space-saving configurations Follow the installation instructions in the video or user manual Usage Equipped with a retractable anti-clog guard to catch hair and prevent clogs Includes an anti-backflow device to prevent unpleasant odors and water backflow Leak-proof design with a silicone gasket and minimal connections to prevent water leakage