The kanji characters engraved on the blade of the Cold Steel Suburito represent the five most important principles for optimal sword cutting technique: circular motion, blade angle, cutting path, distance, and wringing the tea towel (wringing motion of the hands). This specialized training tool is primarily designed for solo practice, cutting drills, and swinging (suburi) to simulate the weight of a real Japanese sword and thus improve strength, endurance, and precision of movement.