This trough sink is hammered by hand and crafted from 18 guage stainless steel. Each trough sink is handmade by artisans. The high shine adds a touch of drama to your bath or powder room. This sink can be topmounted or undermounted. This sink will naturally patina if left untreated but a quick polish will bring back its luster! Crafted from 304 18 Gauge stainless steel. Like the brightwork on a ship, this sink is the highlight of your vanity. Slight variations may exist. This sink uses a standard1.5" lavatory drain (without overflow).