Tojiro Kiri Wood Cutting Board Protect your high quality super sharp thin Japanese cutting blade by using a Tojiro Professional wooden cutting board made form specially selected Japanese KIRI wood. Also known as Paulownia or the “ princess tree “. This wooden board has been hand picked as the ultimate material for use with all brands of high quality Japanese knife blades. This light weight wood and softness combines for excellent durability and maintenance of the knife edge.