1. Good sealing: The 1 1/4 inch space-saving siphon for washbasin features a quality sealing ring and a thickened pipe wall design to effectively prevent water leakage and seepage, ensuring long-term use and keeping the bathroom dry and clean. 2. Filter included: The bathroom space-saving siphon comes with a built-in performance filter that effectively traps hair, dirt, and other debris, preventing pipe blockages, reducing cleaning hassles, and extending the product's lifespan. 3. Space-saving: The sink odor trap boasts a compact design, with adjustable length and angle to fit various setups, maximizing under-sink space and avoiding cluttered pipes for a neat bathroom environment. 4. 360° rotation: The universal rotating design of the space-saving siphon allows flexible adjustment of the drain direction, enabling easy connection to drains in different locations to meet diverse installation needs.