Wakizashi bokken, made by Cold Steel.
These second generation synthetic bokken are made of the heaviest grade polypropylene available and closely duplicate a steel wakazashi in length, size, weight and feel.
While they're not quite as rigid as wood, they have the advantages of being virtually unbreakable and remarkably stiff and cut resistant. (The first generation indesctructible bokken had smooth grips instead of the nifty molded tsuka you see here.)
length: 27 1/2"
blade: 20 3/4"
blade width: 1 1/4"
grip and pommel: 6 3/8"
weight: 12.4 oz
Available in this set: Bokken 2.0, Wakizashi 2.0, and Tanto 2.0.