Inspired by the delicate scallops of a seashell, Addison brings a fresh, inviting look - and a multitude of options - to the bath. Getting ready in the morning is far from routine when you are surrounded by a bath that reflects your personal style. Diamonds are the hardest substance known to man, and DIAMOND Seal Technology takes full advantage of this property. Delta"s exclusive DIAMOND Seal Technology uses a valve with a tough diamond coating to bring you a faucet built to last up to 5 million uses - plus it keeps water inside the faucet out of contact with potential metal contaminants. 1.5 gpm, 5.7 L/min Optional escutcheon for centerset mounting included Features water efficient aerator to aid conservation Matching metal pop-up drain assembly included