In essence, this was a “whip chain”, developed (and refined little) in the 12th Century. On average, The Kusari ranged from 12 to 50 inches in length. Although the chain links were elongated, other patterns and shapes were experimented with. The Kusari had twin weights on each end, weighing between 2 and 6-ounces. An elaborate “kata” technique was taught, allowing a Warrior to either batter or ensnare his attacker. This weapon was fairly effective (in the hands of a skilled user) – in unswording an attacker.