Swanstone QZ03322AD.077-4 4-Hole Granite Kitchen Sink, 22" x 33", Nero Made with 80% actual quartz stone; only a diamond is harder Pre-drilled with 4 faucet holes Offers design flexibility, installs as a drop-in or undermount Innovative raised platform with decorative channels is ideal for food prep, dishwashing and cleanup Virtually indestructible, will not damage from kitchen use