Disclosed is a golf club set having harmonized golf club performance among
the club numbers. In the golf club set, for at least three golf clubs, a ratio
or a sum of a frequency per unit time, the frequency being measured by vibrating
a tip portion of a golf club shaft constituting each of the golf clubs, and a frequency
per unit time, the frequency being measured by vibrating a rear end portion of
the golf club shaft, is determined in relation with order of the club number.