360 degree drainage: Change gravity drainage to centrifugal drainage, 360-degree drainage, fast drainage, not easy to block, and no water at the bottom. Insert the deodorant floor drain core into the sewer and the installation is done in seconds. The new design has been proven many times to bring you a clean and odor-free bathroom environment. Automatic drain switch : Patented magnetic levitation drain that automatically opens during drain to ensure a smooth drain and automatically closes after drain to trap sewer odors and odors. Prevents the sewage from flowing back into the room, preventing water leakage and spills. Durable and practical: Insert the drain core into the sewer and install in seconds. If the filter element needs to be cleaned, it can be pulled out of the drain directly by the handle. Our floor drain core is made of high quality brass and new nano PPS material, which is strong and durable. Clean and Sanitary: Dirt in the pipeline accumulates for a long time, which makes it easy for harmful bacteria to multiply and gases, and even breed insects, affecting family health; Our bottom drain adopts common + vortex backflow design, which can effectively prevent gas diffusion and reptiles; the floor drain rotates and the self-cleaning function keeps the floor drain clean. Compatibility: suitable for all drain holes with a diameter of 3.8 to 4.5 cm and a depth of more than 8 cm. Fits 99% of duct openings. It is recommended to measure the size and depth of the floor drain before purchasing. Silicone drain hose hair extensions can be used in kitchens, bathrooms and laundry rooms. Works with most sinks, drains and angled sinks. Notes:1. Due to manual measurement, please allow 1-3 cm error. Make sure you don't mind before you bid.2.Colors may vary due to different monitors, please understand.