Anti backflow mechanism The drain core features an advanced magnetic seal that opens during water discharge to drain efficiently while preventing backflow and blocking unwanted backflow. This design helps protect counters and floors from water exposure while maintaining smooth operation. Fast drainage system A fast drainage system uses rotating fan blades to create centrifugal action with gravity assist. This action prevents water from pooling, helping keep the area hygienic and dry and reducing the risk of standing water. Long lasting construction Constructed from sturdy brass, the drain core is designed for durability. It includes a silicone reducer circle and a hair filter cover, compatible with drain sizes from 9 to 3.9 inches to fit a range of installations. Key benefits Prevents backflow and protects surfaces from water exposure Rapid drainage reduces standing water and odors Durable brass construction for long life Includes a silicone reducer and adjustable hair filter cover for versatile sizing Compatible with drain sizes from 9 to 3.9 inches What makes it stand out Magnetic seal that responds to water flow for reliable backflow prevention Centrifugal driven fast drainage with minimal effort Allinone solution with reducer and filter cover included Compatible sizes and materials Material: Brass Reducer: silicone circle Filter cover: , fits drains from 9 to 3.9 inches 23 practical use scenarios Kitchen sink drain: reduces backflow risk during heavy use, prevents water from splashing onto counters, and helps maintain a dry workspace. Bathroom or vanity drain: traps hair with the filter cover while enabling fast drainage to minimize standing water and mold risk. Utility or laundry room drain: handles frequent use and hair or debris, maintaining cleanliness and reducing clogs. Performance and reliability Designed for steady, efficient drainage with backflow protection Durable construction suited for regular use in household drains Simple setup with included reducer and filter cover for flexible installation