Blanco 441473 Silgranit II Performa Double Bowl, Cinder Constructed of 80% solid granite Undermount clips included Template provided with 1/8-in reveal Resistant to scratches, Stains and all household acids and alkali solutions 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