Shop Cold Steel O Bokken Trainer Polymer Black. This Cold Steel O Tanto Bokken Trainer offers a dull training blade for safe self-defense training. Features: * One-piece black polypropylene construction for a durable build. * Dull blade with a rounded tip for safe training use. * Realistic replica design can be effectively used in solo practice, training drills, disarm drills, and self-defense demonstrations. Summary of Cold Steel O Bokken Trainer Tanto Point Polymer Black (Black Stonewash) CS 92BKKA Construction: Black Polypropylene; Overall: 18.5″; Blade: 12.125″ l Plastic; Handle: Black l Polypropylene; Bulk Packed.