According to one aspect of the present invention there is provided an adjustable mechanism for connecting two or more shafts, including at least a first shaft having an external surface with an outer diameter and a second shaft which is hollow at a first end, wherein a spring is anchored to the first end of the second shaft, the spring having an inner diameter of similar dimensions to the outer diameter of the first shaft, the spring configured such that when a force is applied to the spring its inner diameter is greater than the outer diameter of the first shaft so that the second shaft can move over the first shaft to a desired position relative to the first shaft, and when the force is no longer applied to the spring it is biased to return to its original inner diameter to bear against the external surface of the first shaft.

A shoulder motion exercise device and method of use having a retainer, a connector, an extender, and a slider. When the user mimics a golf swing, the device aids in the stretching and exercise of at least a shoulder and a portion of the torso.

A shoulder motion exercise device and method of use having a retainer, a connector, an extender, and a slider. When the user mimics a golf swing, the device aids in the stretching and exercise of at least a shoulder and a portion of the torso.

Golf tool devices and golf clubs having those devices attached to, or incorporated with, their grips are disclosed. In some embodiments, the golf tool device includes a housing and a tool assembly attached to the housing. The tool assembly includes a base jaw and a gripper jaw pivotably connected to the base jaw. The tool assembly additionally includes a spring connected to the gripper jaw and configured to urge the gripper jaw toward the base jaw. The golf tool device additionally includes a mode selector assembly configured to selectively switch operation of the gripper jaw between at least two modes. The at least two modes include a first mode in which the gripper jaw moves in response to urging of the spring, and a second mode in which the gripper jaw is secured in a first position that is spaced away from the base jaw against urging of the spring.

A golf club device for improving one's golf abilities is disclosed. The device includes a head, and a shaft where the head is rotatably connected to at least an upper portion of the shaft. Rotation is achieved with an angular rotation mechanism. The angular rotation mechanism may include a variable resistance feature. The angular rotation mechanism may be positioned in or on the head, or it may be positioned in the shaft. One or more visual alignment indicators may also be employed.

A golf club device for improving one's golf abilities is disclosed. The device includes a head, and a shaft where the head is rotatably connected to at least an upper portion of the shaft. Rotation is achieved with an angular rotation mechanism. The angular rotation mechanism may include a variable resistance feature. The angular rotation mechanism may be positioned in or on the head, or it may be positioned in the shaft. One or more visual alignment indicators may also be employed.

Golf tool devices and golf clubs having those devices attached to, or incorporated with, their grips are disclosed. In some embodiments, the golf tool device includes a housing and a tool assembly attached to the housing. The tool assembly includes a base jaw and a gripper jaw pivotably connected to the base jaw. The tool assembly additionally includes a spring connected to the gripper jaw and configured to urge the gripper jaw toward the base jaw. The golf tool device additionally includes a mode selector assembly configured to selectively switch operation of the gripper jaw between at least two modes. The at least two modes include a first mode in which the gripper jaw moves in response to urging of the spring, and a second mode in which the gripper jaw is secured in a first position that is spaced away from the base jaw against urging of the spring.

A golf club 2 includes a head 4, a shaft 6, and a grip 8. The club 2 has a forward club flex of greater than or equal to 140 mm. The forward club flex is measured for a golf club in the completed state. The grip 8 has a weight Wg of less than or equal to 30 g. With the golf club 2, a force acting on the player's body during a swing can be reduced. The golf club 2 can stabilize swing.

A golf club 2 includes a head 4, a shaft 6, and a grip 8. The club 2 has a forward club flex of greater than or equal to 140 mm. The forward club flex is measured for a golf club in the completed state. The grip 8 has a weight Wg of less than or equal to 30 g. With the golf club 2, a force acting on the player's body during a swing can be reduced. The golf club 2 can stabilize swing.

A golf club length adjustment device, comprising a first member affixed to a main shaft, the main shaft configured to couple to a golf club head, a second member slideably coupled to the first member, the second member adapted to couple to a golf club grip, wherein the first member is configured to slide along a club axis relative to the second member to change the length of the golf club.