Defense Dulo & Dulo DVD The Dulo is the easiest to use, and most legal self defense item currently on the market. Learn the basics of self defense against larger, armed, or multiple attackers using only a Dulo. You will learn how to disarm & defend against stabs, slashes, kicks, sticks, and more ! With this DVD, you will gain the self confidence of Multi-Range Combat Science . Guru Kalaj demonstrates a variety of hard hitting in your face concepts, techniques, & combos with his good friend Julius Feldbaum.