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Sarah Dzida gets the lowdown regarding Jujitsu Figure-4 Locks straight from the author George Kirby! A Black Belt Hall of Fame member (Instructor of the Year, 2007), Kirby has been teaching the art since 1967 and is the author of several jujitsu books. His latest book, Jujitsu Figure-4 Locks: Submission Holds of the Gentle Art is available now!