GUARANTEED QUALITY: Quality is our top priority, so all our kitchen sink faucets are tested and certified, meeting or exceeding industry codes and standards SINGLE HOLE INSTALLATION: Fits 1 or 3-hole 4 in. installations with optional deck plate RP103661 (sold separately). Gasket seal helps prevent drips and splashes from leaking under the kitchen sink faucet RELIABLE VALVE: Ceramic disc valve is tested to last at least 500,000 uses to ensure high performance with less drips and a smooth kitchen faucet handle operation. CORROSION-RESISTANT FINISH: Our finishes are intentionally engineered for durability and tested for corrosion resistance to at least 2 times industry standards TESTED AND CERTIFIED: All Delta kitchen faucet finishes are third-party certified and vigorously tested under extreme conditions to ensure years of dependable use without cracking, peeling, chipping, blistering or changing color over time COMPLETE FLEXIBILITY: The spout swivels 360 degrees for added convenience during everyday kitchen tasks You can install with confidence, knowing Delta kitchen faucets are backed by Delta Faucet's Lifetime Limited Warranty