Disclosed is a putter including an interchangeable sleeve mechanism capable of easily replacing and mounting a shaft, the putter comprising a main body part, a downward extension part, a blade formation part having a plate-shaped structure which extends to a predetermined length rearward from a lower end of the downward extension part and has an area having a predetermined size, a plurality of weight mounting grooves disposed to be spaced a certain interval from each other in an upper surface or a side surface of the blade formation part and configured to bind weights in a detachable structure, and a sleeve mechanism mounted in a structure detachably attached to the binding groove of the main body part, having a block structure extending to a predetermined height upward, and formed with a shaft binding fastening hole recessed to a predetermined depth in an upper end surface.

A golf club comprises a shaft, a golf club head fixed to one of ends of the shaft, and a grip attached to the other of the ends of the shaft and defining a grip end. The golf club head comprises a head main body and at least one weight. The head main body includes a plurality of ports for attaching the at least one weight. Each weight can be attached to and detached from each port so that the position of the center of gravity of the head can be changed by changing the position between the ports. The difference between a maximum value and a minimum value of linear distances from the grip end to the center of gravity of the weights when attached to the respective ports is not more than 20 mm.

A golf club comprises a shaft, a golf club head fixed to one of ends of the shaft, and a grip attached to the other of the ends of the shaft and defining a grip end. The golf club head comprises a head main body and at least one weight. The head main body includes a plurality of ports for attaching the at least one weight. Each weight can be attached to and detached from each port so that the position of the center of gravity of the head can be changed by changing the position between the ports. The difference between a maximum value and a minimum value of linear distances from the grip end to the center of gravity of the weights when attached to the respective ports is not more than 20 mm.

A balanced club head includes an encasing with a face plate, a rear side, left and right side, a top side, and a bottom side, defining an interior, right and left inner longitudinal walls, a shaft aperture, a shaft receptacle, a notch in one of the walls, such that the balanced club head is configured to receive a golf shaft, such that the shaft receptacle is configured to receive a lower end of the golf shaft, which protrudes through the shaft aperture with the notch accommodating an angled position of the golf shaft, thereby creating a counter weight and balance that maximizes distance and provides greater accuracy of direction when mounted on a golf club.

A portable golf swing exerciser includes: a main body of a shaft shape; a head shaft including a head, and one or more connection shafts, of which one end is detachably coupled to the head, and the other end is detachably coupled to a front end of the main body; and an antenna stick guide extended from or retracted into a rear end of the main body in a form of an antenna having multiple sections.

A portable golf swing exerciser includes: a main body of a shaft shape; a head shaft including a head, and one or more connection shafts, of which one end is detachably coupled to the head, and the other end is detachably coupled to a front end of the main body; and an antenna stick guide extended from or retracted into a rear end of the main body in a form of an antenna having multiple sections.

Golf club heads are releasably engaged with shafts so that the club heads and shafts can be readily interchanged and/or so that the shaft position with respect to the club head can be readily changed. Assemblies for connecting the club head and shaft may include: a shaft adapter, a collet, a ferrule, and a club head having an interior chamber. The club head and shaft may be changed by releasing the securing system and exchanging the original parts with different parts.

Golf club heads are releasably engaged with shafts so that the club heads and shafts can be readily interchanged and/or so that the shaft position with respect to the club head can be readily changed. Assemblies for connecting the club head and shaft may include: a shaft adapter, a collet, a ferrule, and a club head having an interior chamber. The club head and shaft may be changed by releasing the securing system and exchanging the original parts with different parts.

A head assembly for a golf putter includes a head piece, a hosel or connector for attaching a putter shaft to the head piece, and a releasable clamping element. A body portion of the hosel is formed with a concavity defined by a cylindrical concave surface. A finger extension of the hosel has a bore for receiving an end of a putter shaft. The head piece includes an elongate body having a putting face on one side and a cylindrical convex surface on an opposite side. The cylindrical convex surface is insertable into the concavity in the hosel body and is engageable with the cylindrical concave surface thereof. The clamping element adjustably fixes the hosel and the head piece to one another.

A head assembly for a golf putter includes a head piece, a hosel or connector for attaching a putter shaft to the head piece, and a releasable clamping element. A body portion of the hosel is formed with a concavity defined by a cylindrical concave surface. A finger extension of the hosel has a bore for receiving an end of a putter shaft. The head piece includes an elongate body having a putting face on one side and a cylindrical convex surface on an opposite side. The cylindrical convex surface is insertable into the concavity in the hosel body and is engageable with the cylindrical concave surface thereof. The clamping element adjustably fixes the hosel and the head piece to one another.