This  is our handcraft stainless steel sink with apron ,   made of 304 (18/8) stainless steel , 16 or 18 Guange. Handcrafted from a panel of stainless 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.