Gyro Zeppeli/Abilities and Powers

The Spin
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.

Stands
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.

It's noteworthy that Gyro was able to see Stands even before he get one of his own. The nature and origins of this ability were never explored.