Blanco 441467 Silgranit II Diamond Super Single Bowl, Cinder Flat deck is ideal for both drop-in and undermount installations 80% solid granite, silgranit material features the touch and feel of Natural stone Pre-drilled for single hole faucet 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