A variable golf putter is disclosed. The variable golf putter includes a putter head coupled to the lower end of a shaft, the putter head having a head hitting surface, and a hitting member selectively coupled to the putter head. The hitting member has various hitting surfaces, whereby it is possible to perform putting practice in various manners. In addition, the hitting member and the hitting material made of a material different from the material of the hitting member are formed integrally with each other, whereby it is possible to provide various hitting sensations and thus to efficiently perform putting practice.

A golf club head, preferably a putter head, comprising a replaceable face insert is disclosed herein. The golf club head comprises a body with face cavity and a secondary cavity in communication with, and disposed behind, the face cavity, and at least one opening extending through a top or sole portion into the secondary cavity. The replaceable face insert comprises a striking portion and a support structure extending from a rear surface of the striking portion. The support structure is received within the secondary cavity and the striking portion is received within the face cavity, and then a rod or bolt is inserted through the opening and through the support structure to reversibly secure the face insert to the body. A linear bearing may be disposed within the support structure to receive the rod or bolt.

Embodiments of grooves of golf club heads and methods to manufacture grooves of golf club heads are generally described herein. Other embodiments may be described and claimed.

An embodiment of a putter type golf club head with an upper and lower portion, made from two different materials, is enclosed herein. Other embodiments are described herein.

Examples of golf club heads and methods to manufacture golf club heads are generally described herein. In one example, a golf club head may include a body portion having a sole portion with a set of weight ports. Each weight port may have a first section and a second section. Each weight portion from a first set of weight portions may be adhered to the first section of a corresponding weight port by epoxy. Each weight portion from a second set of weight portions may be fastened to the second section of a corresponding weight port. At least a portion of the weight portions of the first set of weight portions may be interchangeable. At least a portion of the weight portions of the second set of weight portions may interchangeable. Other examples may be described and claimed.

Embodiments of golf clubs with adjustable loft, lie, head mass and methods of manufacturing golf clubs with adjustable loft, lie, and head mass are generally described herein. Other embodiments can be described and claimed.

Putter type club head with vertical groove patterns are described herein. A putter type club head comprises a putter face having a plurality of first curved grooves and a plurality of second curved grooves. The first curved grooves and the second curved grooves extend in a general vertical direction, and intersect each other at a plurality of points across the putter face. The width and depth of the first curved grooves and the second curved grooves can vary across the putter face in a direction extending from a heel end to a toe end, and/or in a direction extending from a top rail to a sole. The vertical groove pattern provides consistent ball speed performance for any impact location on the putter face.

Examples of golf club heads and methods to manufacture golf club heads are generally described herein. In one example, a body portion of a golf club head may include a cavity having an opening and an interior structure defined by a wall portion and a base portion. A hosel portion may include an insert portion and a neck portion extending therefrom. The hosel portion may be attached to the body portion by an interference fit between the neck portion and the opening of the cavity. The insert portion may be received inside the cavity and may be spaced apart from the interior structure of the cavity. A space between the insert portion and the interior structure of the cavity may be partially or entirely filled with an adhesive to hold the hosel portion in place. Other examples may be described and claimed.

Embodiments of golf club heads and methods to manufacture golf club heads are generally described herein. In one example, a golf club head may include a body portion having a face portion for striking a golf ball and an enclosed interior cavity. A filler material may be disposed in the interior cavity and may reinforce the face portion. The filler material may include a low-density polymer material to enable discretionary mass placement to other areas of the golf club head. The golf club head may also include a hosel portion configured to adjust certain mass properties of the golf club head. Other examples and embodiments may be described and claimed.

Provided is a golf putter head, which includes a head body; and a hitting member provided in front of the head body for hitting a golf ball, and to be freely slidable up and down within a predetermined range with respect to the head body. According to the present invention, when the golf putter hits the golf ball, as spin of the golf ball is smoother, directionality of the golf ball is increased.