This series includes Undermounted Right-angled Double Bowl sinks and Undermounted Right-angled SingleBowl sinks. Made of 304 18/8 stainless steel ,16 or 18 Guange. Handcrafted from a panel ofstainless steel ,Extra Bowl depth, Sound- deadening insulation, Drain groove design, Offset or Double,3-1/2" (114mm)drain opening. supplied with cut-out template and mounting clips