Thuja – Tree of Life Handle. Set includes: Barbecue Knife No 1 (11 3/4″ blade), Chefs No 1 Knife (7 3/4″ blade) and Fillet Knife No 1 (6 3/4″). Tradition meets perfection. White cedar burl wood makes our Tree of Life handle a cut above. Thuja – also known as arborvitae or “tree of life” – has an extremely tough burl that makes using the knife an absolute pleasure. A handle of outstanding quality.