LASTS 2X LONGER: Patented DIAMOND Seal Technology reduces leak points and lasts twice as long as the industry standard—ensuring leak-free operation for the life of the bathroom faucet (Industry standard is based on ASME A112.18.1 of 500,000 cycles) REDUCES LEAKS: Delta's DIAMOND Valve, a diamond-embedded ceramic disc, requires no lubrication and eliminates wear on seals, so you can rest assured that this Delta bathroom sink faucet will perform like new for life SUPPLY LINES INCLUDED: InnoFlex PEX supply lines are integrated into the oil rubbed bronze bathroom faucet for one less potential leak point EASY INSTALLATION: Designed to fit 3-hole, 4" centerset bathroom sink configurations. Everything you need is together in one box, including coordinating oil rubbed bronze metal drain assembly LIFETIME LIMITED WARRANTY: You can install with confidence, knowing this delta bathroom faucet is backed by Delta Faucet's Lifetime Limited Warranty