Blanco 511-607 BlancoDiamond 1-3/4 Bowl, AnthraciteBLANCO pioneered the concept of hard composite sinks in 1980, using some of the toughest materials available from Mother Nature. More than just a coated surface, solid material throughout the entire sink ensures consistent color and durability year after year.SILGRANIT; sinks feature the touch and feel of natural stone. Unlike cast iron and soft composite materials, SILGRANIT; combines the best performing ingredients to produce kitchen sinks that are durable, stain resistant, and easy-to-clean.Blanco 511-607 BlancoDiamond 1-3/4 Bowl, Anthracite Features:; Flat deck is ideal for both drop-in and undermouunt installations; Spacious elegance with uniquely slim bowl divider; 80% solid granite, SILGRANIT; material features the touch and feel of natural stone; Color all the way through; Highly resistant to scratching and chipping; Heat resistant to 536; F; Non-porous, resists most household stains; Pre-drilled for single hole faucet with four other knockout hole locations