This DVD presents many arm locks, shoulder, elbow, wrist, and finger locks worked in flexion, extension, compression, internal torsion and external torsion. You will learn step by step over fifty different lock techniques, based on 20 official Kansetsu Waza. Cyril Guenet, expert in self-defense and Goshin Jutsu, brings you a realistic look by dissecting the mechanics of each lock, and how to apply them against collar grip, wrist grip, body grip, against bare hand strikes, stick, and knife.