Designed to look like new for life, Brilliance finishes are developed using a proprietary process that creates a durable, long-lasting finish that is guaranteed not to corrode, tarnish or discolor. You can install with confidence, knowing that Delta faucets are backed by our lifetime limited warranty.Three hole, four in installationWaterSense labeled faucet uses at least 20% less water than the industry standard without compromising performanceRigid spout1/4 turn handle stopsHot and cold stems are interchangeable1/2-14 NPSM threaded male inlet shanksControl mechanism is a rotating cylinder with stainless steel plate and 90 deg rotation, with replaceable non-metallic seatsTwo handle lavatory faucets for exposed mounting on three hole sinks with 4 in centersPlastic pop-up drain