| 摘要 |
<p>A putter head comprising four ports 3-6 located directly behind the putter face wherein 2 outer ports 3 and 6 are bored and sealed from the top with a dowel and screw to leave a space for storing the liquid and two inner ports 4 and 5 are bored and sealed from the bottom with a screw. The dowels in the outer ports 3 and 6 may be positioned the width of a golf ball apart and act to guide the positioning of a ball with respect to the club. The fluid used may be oil.</p> |
