The "Spin" is the Steel Ball Run counterpart to the "
Hamon" used primarily in parts
1 and
2 of the original universe. The
Zeppeli family's 'Spin' technique is Gyro's primary means of attack. The
steel balls which Gyro carry are weapons with which he uses the 'Spin' technique. By throwing them, he seems able to control their path - causing spiral ripples in flesh and even having them return to him after an attack. However, Gyro explains that the "Spin" was not meant for offensive purposes. It is in fact used as a medical treatment or for anatomical purposes.
By using the "Spin" in conjunction with a
corpse part, Gyro is also capable of manifesting a stand. Using the spin with the assistance of the corpse's eye, Gyro is capable of producing eyes on his steel balls for enhanced sight and precise attacks, called
Scan.In his final battle,another stand,
Ball Breaker manifests when Gyro invokes the super spin, and is capable of bypassing dimensional barriers if the super spin is done perfectly with a flawless steel ball.
References