【NSF Certified - Safe & Reliable】KES drinking water faucet is NSF certified (a trusted organization for public health and safety), compliant with NO-LEAD requirements, ensuring safe and reliable drinking water for your peace of mind! 【Lead-Free Metal - Safe Drinking Water】All-metal design, inside and out, including lead-free 18/8 stainless steel cartridge. Say goodbye to plastic worries! Moreover, the one-piece spout (NO chemical glue) and food-grade seals ensure ZERO sec-contamination. Enjoy worry-free drinking water for your family's health! 【Leak-Proof】KES RO faucet comes with secured threaded connector on metal shank end. Meanwhile, the 18/8 stainless steel ceramic cartridge meets US standards (tested over 500K ON+OFF uses), which undergoes comprehensive tests by KES labs. No cartridge replacements, saving you time and money! 【Drip-free LIFETIME Warranty】You can install with confidence, knowing this RO faucet is backed by KES Faucet's drip-free Lifetime Warranty. 27 years of Product Innovations & 24-hour Customer Support, FREE Parts upon request! 【Rustproof & Long-lasting Finish】KES kitchen sink faucet features a high-quality finish that passes various rigorous tests, including Salt Spray Test, Adhesion Test, Cross-cut Test, and Falling Abrasive Test for industry-leading quality finish, standing up to daily use.