The Zeppeli family's Spin technique, usually applied with special Steel Balls, is a versatile skill Gyro has trained in since his youth. Gyro equips himself with two Steel Balls as a means of self-defense, attack, and general strategic advantage. Throwing his Steel Balls with the Spin, Gyro may create a variety of impressive trajectories, able even to have them return directly to him, mainly after successful contact with his target. The Spin may be viewed as the Steel Ball Run counterpart to the Ripple featured primarily in Phantom Blood and Battle Tendency.