Golf club, shaft replacing method and head replacing method

A method for replacing a shaft of a golf club, the golf club including:

• a head having a hosel;
• the shaft;
• a shaft case fixed to one end of the shaft, and configured to be inserted into the hosel, the shaft case being formed in a substantially cylindrical shape;
• and a ring-shaped screw member configured to be screwed into one end of the hosel to fix the shaft case in the hosel, and to be fitted with an outer face of an one end of the shaft case, the ring-shaped screw member being noncontact with the shaft, the method comprising:
• fixing a newly-provided shaft to a newly-provided shaft case corresponding to the hosel;
• unscrewing the ring-shaped screw member from the hosel;
• removing the shaft case with the shaft from the hosel;
• inserting the newly-provided shaft case with the newly-provided shaft to the hosel;
• and
• screwing the ring shaped screw member on the hosel.