GUARANTEED QUALITY: Quality is our top priority, so all our bathroom sink faucets are tested and certified, meeting or exceeding industry codes and standards EASY DIY INSTALLATION: Wrench-free, quick-connect hose audibly clicks when water lines are connected properly, ensuring a quality installation to help prevent leaks. The widespread bathroom faucet fits 3-hole 4-16 in widespread installations RELIABLE VALVE: Valve cartridge is tested to last at least 500,000 uses to ensure high performance with less drips and a smooth bathroom faucet handle operation CORROSION-RESISTANT FINISH: Our Brilliance finishes are intentionally engineered for durability and tested for corrosion resistance to at least 2 times industry standards NO LEAD COMPLIANT: Every Delta faucet is certified to NSF/ANSI Standard 61, which sets the criteria for product safety. Not all bathroom faucets are certified, so it is important to always check for NSF/ANSI 61 certification when buying a faucet