| 摘要 |
<p>This invention is concerning about the golf club for backswing practice. The golf club for backswing practice of this invention is composed of a shaft with moving passage in the direction of length to the inside or outside, grip which is installed at the top of shaft and hold with hands, head which is installed at the bottom of shaft and hit the ball and moving ball which is made to be able to move inside along with moving passage and is installed in the inside and outside of moving passage of the shaft. For this invention, the incorrect swing posture or speed can be corrected easily through vibration occurred by the movement of moving ball which moves on shaft of golf club.</p> |
