A drop-in sink is a type of sink that is installed by dropping it into a pre-cut hole in a countertop. The rim of the sink rests on the surface, providing a clean and finished look. This installation method is popular for its ease and versatility, making it suitable for various materials like granite, laminate, or solid surface. These sinks come in various shapes and sizes, allowing homeowners to choose one that fits their kitchen or bathroom design. Common materials for drop-in sinks include stainless steel, ceramic, and composite. Their straightforward installation process makes them a favored choice for both DIY enthusiasts and professional remodelers.