Ultrafiltration Cartridge Faucet Filter Faucet Water Purifier. 304 Stainless Steel Construction: Durable material ensures long-lasting performance for household kitchen use. Dual Mode Switching: Easily switch between unfiltered spray and filtered spray modes. Long Service Life: Membrane strength exceeds 100N with a lifespan of over 5 years. Self-Cleaning Pipe Design: Advanced pipe design rate ensures efficient self-cleaning functionality. Universal Adapter Included: Package includes universal and internal thread adapters for easy installation. CE and WRAS Certified: Meets CE standards and passed WRAS certification in 2013 for safety.