Patent ID: 7857707

Claim:
A practice golf club, comprising: a hollow shaft; a club head provided at a tip portion of the shaft; a grip provided at a base end portion of the shaft; and a balance-shifting unit for increasing a swing balance of the golf club in association with each swing, the balance-shifting unit including: a partitioning portion for dividing an inside of the shaft into a first portion on the base end portion side and a second portion on the tip portion side; and a balancing material, wherein the partitioning portion includes a first shifter portion for moving the balancing material held in the first portion to the second portion side in association with a swing of the golf club; and the first shifter portion includes: a first communication portion which has a holder portion for holding a predetermined amount of the balancing material from the first portion and provides communication between the first portion and the second portion via the holder portion; and a first valve mechanism capable of opening and closing an opening on the second portion side of the holder portion; the first valve mechanism opening the opening on the second portion side of the holding portion by using a centrifugal force generated by a swing of the golf club.