Blanco 519050 Precis Equal Double Bowl, 16-Inch, Cinder Constructed of 80% solid granite 8-In bowl depths Resistant to scratches, Stains and all household acids and alkali solutions Required outside cabinet of 33-in Unsurpassed clean ability backed by industry leading 7 patents Resistant to scratches, stains and all household acids and alkali solutions 80% solid granite Heat resistant up to 536-DegreeF