A shaft includes a tip end, a butt end, flexural rigidities E1 to E10 at respective points that are located 130 mm, 230 mm, 330 mm, 430 mm, 530 mm, 630 mm, 730 mm, 830 mm, 930 mm, and 1030 mm apart from the tip end. A ratio (E8/E1) is greater than or equal to 2 and less than or equal to 7. The flexural rigidity E1 is less than or equal to 2.5 (kgf.Math.m.sup.2). The flexural rigidity E8 is greater than or equal to 5.0 (kgf.Math.m.sup.2). When a formula of a straight line that passes through a point (230, E2) and a point (630, E6) is represented by y=ax+b, the shaft satisfies the following relationships R1 and R8:

(130a+b)<E1≤(130a+b+0.5)  (R1), and

(830a+b)<E8≤(830a+b+1.0)  (R8).

A shaft includes a tip end, a butt end, flexural rigidities E1 to E10 at respective points that are located 130 mm, 230 mm, 330 mm, 430 mm, 530 mm, 630 mm, 730 mm, 830 mm, 930 mm, and 1030 mm apart from the tip end. A ratio (E8/E1) is greater than or equal to 2 and less than or equal to 7. The flexural rigidity E1 is less than or equal to 2.5 (kgf.Math.m.sup.2). The flexural rigidity E8 is greater than or equal to 5.0 (kgf.Math.m.sup.2). When a formula of a straight line that passes through a point (230, E2) and a point (630, E6) is represented by y=ax+b, the shaft satisfies the following relationships R1 and R8:

(130a+b)<E1≤(130a+b+0.5)  (R1), and

(830a+b)<E8≤(830a+b+1.0)  (R8).

A method for manufacturing a golf club shaft comprises: a preparing step of preparing a shaft main body formed from a fiber reinforced resin; a mounting step of mounting a surface layer material on an outer peripheral surface of the shaft main body, wherein the surface layer material comprises a heat-shrinkable film base material and is provided with a display portion; and a fixing step of firmly fixing the surface layer material to the outer peripheral surface of the shaft main body by heat-shrinking the surface layer material.

A method for manufacturing a golf club shaft comprises: a preparing step of preparing a shaft main body formed from a fiber reinforced resin; a mounting step of mounting a surface layer material on an outer peripheral surface of the shaft main body, wherein the surface layer material comprises a heat-shrinkable film base material and is provided with a display portion; and a fixing step of firmly fixing the surface layer material to the outer peripheral surface of the shaft main body by heat-shrinking the surface layer material.

A golf club includes a head, a shaft, and a grip. The head has a center-of-gravity depth of greater than or equal to 23.5 mm. The head has a center-of-gravity distance of less than or equal to 39 mm. The shaft has a forward flex of greater than or equal to 110 mm. When f1 denotes the forward flex of the shaft and f2 denotes a backward flex of the shaft, f2/f1 may be greater than or equal to 0.8 and less than or equal to 0.9. The head may have a volume of greater than or equal to 380 cc. The shaft may have a weight of less than or equal to 50 g.

A golf club includes a head, a shaft, and a grip. The head has a center-of-gravity depth of greater than or equal to 23.5 mm. The head has a center-of-gravity distance of less than or equal to 39 mm. The shaft has a forward flex of greater than or equal to 110 mm. When f1 denotes the forward flex of the shaft and f2 denotes a backward flex of the shaft, f2/f1 may be greater than or equal to 0.8 and less than or equal to 0.9. The head may have a volume of greater than or equal to 380 cc. The shaft may have a weight of less than or equal to 50 g.

A golf club has a first shaft coupled to a club head, a second shaft configured to slidably engage a portion of the first shaft, a grip coupled to the second shaft, and an adjustable length shaft assembly received by the second shaft and configured to allow a portion of the first shaft to slide in relation to the second shaft in a first configuration, and to restrict a portion of the first shaft from sliding in relation to the second shaft in a second configuration. The grip is restricted from rotation about the first shaft or the second shaft as the first shaft slides in relation to the second shaft.

A golf club has a first shaft coupled to a club head, a second shaft configured to slidably engage a portion of the first shaft, a grip coupled to the second shaft, and an adjustable length shaft assembly received by the second shaft and configured to allow a portion of the first shaft to slide in relation to the second shaft in a first configuration, and to restrict a portion of the first shaft from sliding in relation to the second shaft in a second configuration. The grip is restricted from rotation about the first shaft or the second shaft as the first shaft slides in relation to the second shaft.

Described herein is a golf club shaft used with putter type club heads for making a putting stroke on the green of a golf course. The putter shaft is made from high-modulus fibers which results in an ultra-high stiffness putter shaft with high frequency, low tip deflection, and high torsional and bending rigidity. The ultra-high stiffness putter shaft prevents unwanted face twisting during the impact of a golf ball during a putting stroke, allowing for greater putt accuracy.

Described herein is a golf club shaft used with putter type club heads for making a putting stroke on the green of a golf course. The putter shaft is made from high-modulus fibers which results in an ultra-high stiffness putter shaft with high frequency, low tip deflection, and high torsional and bending rigidity. The ultra-high stiffness putter shaft prevents unwanted face twisting during the impact of a golf ball during a putting stroke, allowing for greater putt accuracy.