Training device for effectively training the muscles used in the golf swing comprises a handle joined to a shaft on which a head part is fixed with different sizes to have different water resistant forces

摘要

u Training device comprises a handle (1) joined to a shaft (2) on which a head part (3) is fixed with different sizes to have different water resistant forces. Preferred Features: The head part has a weaker water resistant coefficient on one side and a stronger water resistant coefficient n the other side. The head part has a convex or concave structure or ball-like external form and radial internal form. The head part has detachable weights.