A wood specialist for more than 50 years, Catskill's experience with select eastern hardwoods sets it apart. The company uses only non-endangered, self-replenishing domestic species, such as hard maple and birch. This adjustable over-the-sink Cutting Board has pull-out plastic wires that adapt to fit almost any sink. It's a great help for cooks who need counter space, as it effectively turns the kitchen sink into a cutting surface. Extension wires extend an additional 3-inches.