Features: This 1inch Sink Drain Adapter features a clear backflow preventer and double Overflows outlets, ensuring efficient drainage and preventing unpleasant odors in your kitchen or bathroom. Produced from plastic, this adapter includes a visible one way drain Valves that allows for easy monitoring and maintenance of your plumbing system. Suitable for homeowners and DIY enthusiasts looking to upgrades their sink drainage systems with a reliable and easy to install solution. Perfect for use in both kitchen and bathroom sinks, this Trap kit is designed to fit seamlessly into existing setups, enhancing the functionality of your home plumbing. With its innovative design and practical features, this sink drain adapter is a must have for anyone seeking to improve their home's plumbing efficiency and hygiene. Specifications: Material: plastic Thread: 1inch Size: about 7x14cm/3x5.5inch Package Includes: 1 set Sink Drain Adapter note: Please allow 1 to 3cm error due to manual measurement, please make sure you do not mind before you bid, Due to the difference between different monitors, the picture may not reflect the actual color of the item.