| 摘要 |
A golf tee includes a ball seat portion on which a golf ball is placed; and a rod-shaped support shaft portion formed downward from the ball seat portion. The support shaft portion has a projection that is laterally formed on and projected from the support shaft portion. The ball seat portion and the support shaft portion are formed plane-symmetrically on a single plane including a central axis line of the support shaft portion and a point of the projection. In the single plane, a virtual plane including contact portion that contacts with a golf ball when the golf ball is placed on the ball seat portion and a central axis line of the support shaft portion form an obtuse angle on one side of the axis line and form an acute angle on the other side of the axis line. |
