The Walnut R-Board Series are the #1 cutting board choice of culinary professionals worldwide. Made of solid American Black Walnut, these cutting boards are 1-1/2” thick and are available in 3 various sizes. Each cutting board includes recessed finger grips and is reversible to allow for a food specific cutting surface. Each cutting board is durable enough to withstand constant cutting, chopping, and slicing (with proper care & maintenance.)