The Black Ops Kalaj Kutter Replica Persian Immortals Swords are great tools for the beginner, intermediate, or advanced practitioner of defense (/offense) 2 sword training. These scimitar swords are hand crafted from a solid piece of High Density Poly, a high impact strength and high density polyethylene which has excellent tensile, energy absorption, abrasion resistance, water/ salt resistant, and resistance to stress cracks, so you will be sure to enjoy these Kalaj Kutters for years to come. I did not design the Black Ops line for contact training, but they sure can take a beating. It should be understood that every Kalaj Kutter is hand crafted, and there will always be slight differences from one piece to another. Full force, fluid, hard hitting strikes. Using two swords, there are a multitude of flow patterns. Finding proper flow with your strikes is the ultimate goal when training double sword. Once you have proper flow, speed and power comes naturally. You will learn stepping techniques, 4 powerful flow patterns, and much more. Learn the meaning of flow and power with two swords when you train Multi-Range Combat Science. Very Important: It should be known, that this instruction video is considered a short. While the footage is hardly the best, this DVD has 3 basic and 3 advanced techniques, and the complete run time of this video is about 13 minutes.