|INSTITUTIONAL COPY with Full Public Screening Rights. For non-profits, public schools, university libraries, corporations, etc. A fast paced instructional DVD with balisong expert Jeff Imada covering all aspects of the butterfly knife. You'll learn: basic opening and closing techniques; one and two hand manipulations; and aerial openings. Also included is the unique history of the balisong; knife construction; balisong knife fighting; and a special interview and demonstration by Dan Inosanto. DVD. 50 minutes.