Rohl 6339-68 33-Inch Allia Double Basin Undermount Fireclay Kitchen Sink with Large Right Basin, Biscuit Constructed of fireclay, an extraordinarily robust material which can withstand temperatures up to 2700 degrees Fahrenheit Guaranteed to never fade or stain Acid, alkali and abrasion resistant glazed surface Handmade by skilled craftsman (dimensions may vary by +/- 2%)