Embodiments of golf clubs head sets with varying characteristics are disclosed herein. Other examples and related methods are also generally described herein.

A golf club head according to the disclosure is a cavity-back iron type golf club head that includes a face portion, a cavity portion provided behind the face portion, and a protrusion provided on a lower part of a rear face of the face portion. The protrusion includes a first recess extending from an upper surface of the protrusion toward a sole, a second recess positioned closer to a toe than the first recess is and extending from the upper surface of the protrusion toward the sole, and a thick portion provided between the first and second recesses in a toe-heel direction. The first and second recesses each has a substantially trapezoidal shape in a cross-sectional view taken along a plane that is parallel to a front face of the face portion and passes through a deepest part of each of the first and second recesses.

The sole cavity ports described herein can have varying thicknesses across the cavity port lengths. In some embodiments, the golf club heads described herein can have a weight insertable into the sole port, wherein the weight can comprise a variable density. Other examples and related methods are also disclosed herein.

A golf club head includes a body having a heel portion, a toe portion, a sole portion, and an outer surface, a strikeface having a geometric center, a head center of gravity, and a weight member including a weight pad. The weight member is configured to be repositionable by the user to a first position or a second position. The club head having the weight member in the first position shifts the head center of gravity toward the strikeface, and the club head having the weight member in the second position shifts the head center of gravity away from the strikeface.

A system and methods for custom-fitting golf clubs and golf club components is disclosed. Data is generated by a tracking device as a plurality of golf swings are performed by an individual. The data comprises motion and orientation information associated with a golf ball and with a golf club. The data is displayed using a graphical user interface. A plurality of shot characteristics is determined from the data. The shot characteristics are used to recommend golf clubs and golf club components that adjust a golfer's swing where the golfer exhibits the plurality of shot characteristics.

A golf club comprises a club head having a hosel, a shaft disposed within the hosel, a ferrule disposed about the shaft at a coupling between the shaft and the hosel, and a tagging device coupled to the ferrule. The tagging device can be at least partially disposed within the ferrule, and the tagging device can be a wireless communication device.

A set of iron type golf club heads comprising a plurality of iron type golf club heads, the plurality of iron type golf club heads comprising a long iron, a mid iron, and a short iron; wherein each of the plurality of iron type golf club heads comprise a striking face, and wherein each of the plurality of iron type golf club heads comprise a plurality of grooves formed in the striking face extending generally from a heel side of the striking face towards a toe side of the striking face; wherein the plurality of grooves of each of the plurality of iron type golf club heads comprise an edge radius, wherein the edge radius of the plurality of grooves of the long iron is greater than the edge radius of the plurality of grooves of the short iron.

A golf club shaft connection assembly comprising first and second shaft sections, male and female adaptors, a hollow retainer, a spring, and a plurality of balls is disclosed herein. The male and female adaptors are each attached to the first and second shaft sections, respectively, preferably with a permanent adhesive. The male adaptor comprises a protrusion that fits within a keyed interior of the female adaptor, and moving the hollow retainer towards the male adaptor reversibly fixes the two adaptors together, while moving the hollow retainer towards the female adaptor allows the male adaptor to be removed from the female adaptor.

An iron-type golf club having selectively machined portions and attributes.

A golf club head includes a club body including a heel portion, a sole portion, a toe portion, a top-line portion, and a face portion. In some embodiments, the face portion has an ideal striking location and at least one channel defined in the face. In some embodiments, the golf club head has a striking face and at least one channel defined in the striking face. In some embodiments, the golf club head has an ideal striking location and at least one non-ideal striking location.