Robby's Automatic Positioner is specially designed so you throw your ball with precision accuracy and power. When set with the thumb on top of the ball, it produces the normal 11 o'clock - 5 o'clock position, enabling the ball to swing out in a true pendulum.
- Robby's Automatic Positioner is specially designed so you throw your ball with precision accuracy and power.
- When set with the thumb on top of the ball, it produces the normal 11 o'clock - 5 o'clock position, enabling the ball to swing out in a true pendulum.
Robbys Vinyl Brown Bowling Glove
