Abstract: A club head is adapted to be connected to a shaft of a golf putter. The club head includes a head unit formed with a fixing hole that is adapted for insertion of the shaft thereinto. The fixing hole has a width in a lengthwise direction of the head unit adapted to be larger than a width of the shaft in the lengthwise direction, such that the position of the head unit relative to the shaft is adjustable in the lengthwise direction.

Abstract: A golf putter includes a head and a shaft. The head has a head body having a top surface that is formed with a mounting groove. The shaft has a main body portion and a connecting portion connected to the main body portion. The connecting portion is inserted into the mounting groove, is movable along the mounting in a longitudinal direction, and has a non-circular cross-section, such that the connecting portion is non-rotatable relative to the mounting groove of the head.

Abstract: A coupling device is adapted for use in a golf putter. The golf putter includes a shaft and a head. The coupling device is adapted for interconnecting the shaft and the head, and includes a first coupling member and a second coupling member. The first coupling member is adapted to be connected to the shaft. The second coupling member is adapted to be connected to the head, and is pivotally connected to the first coupling member so that an angle between the shaft and the head is adjustable.

Abstract: A golf putter includes a head and a shaft. The head has a head body having a top surface that is formed with a mounting groove. The shaft has a main body portion and a connecting portion connected to the main body portion. The connecting portion is inserted into the mounting groove, is movable along the mounting in a longitudinal direction, and has a non-circular cross-section, such that the connecting portion is non-rotatable relative to the mounting groove of the head.