A golf practice arrangement that is used to develop a golfer's swing. The practice arrangement has a club with a head that has a hosel extending from the head for connection to a shaft. The shaft at one end has a grip attached to it and is connected to the hosel at the opposite end. The head has a striking face that is adapted for striking a fastener and a body that is aligned behind the striking face. The fastener is driven into a block that is held in a holder affixed to the mat. The mat is built for a user of the club to stand upon when striking the fastener into the block with the club. The fastener may be a nail that is driven into a wood block. The striking face is round having a circular area with which to strike.

A putter comprising an adjustable hosel structure is disclosed herein. In particular, the putter comprises a hosel assembly comprising a shaft receiver and two interlocked bars that connect the shaft receiver to the putter head. A plurality of bolts connect the bars to the shaft receiver and the putter head, and these points of connection are joints about which the bars move, and which can be restrained to immobilize the hosel assembly or otherwise reversibly fix it in place so that a longitudinal shaft axis is aligned with a desired portion of the putter head. The hosel assembly preferably is adjustable along a horizontal, heel-to-toe axis, and is partially disposed, and secured, within a pocket on the heel side of the putter head.

A golf club head is described having a club head body having an external surface with a heel portion, a toe portion, a crown portion, a sole portion, and a front opening. The golf club head also includes a face insert support structure located at the front opening. The support structure includes a rear support member. The rear support member includes a support portion interior surface contour defining an apex point and an undercut distance in an undercut region within at least one major or minor plane. A non-undercut region is located in at least one major or minor plane intersecting the crown to face transition region.

Embodiments of golf clubs having a body, a hosel portion, and an adjustment portion, wherein the adjustment portion is configured to adjust the loft and lie of the club head are described herein. Also described herein are methods of manufacturing golf clubs having a body, a hosel portion, and an adjustment portion, wherein the adjustment portion is configured to adjust the loft and lie of the club head. Other embodiments may be described and claimed.

A golf club includes a head; a shaft; and a grip, wherein the head includes a front member and a back member detachably mounted to the front member.

A golf club includes a shaft, a golf club head, a first adapter, a second adapter, and a fixing member that detachably fixes the second adapter to the first adapter. An internal space of the golf club head has a housing portion for housing the second adapter, and the housing portion is configured to regulate movement of the second adapter. A third opening portion that communicates with the housing portion and in which the second adapter can be inserted is formed in the surface of the golf club head. A first coupling portion of the first adapter is configured to incline relative to the shaft, and a second coupling portion of the second adapter is configured such that the first adapter is coupled at an angle to the second adapter.

A golf club head includes a body defining an interior cavity. The body includes a sole positioned at a bottom portion of the golf club head, a crown positioned at a top portion, and a skirt positioned around a periphery between the sole and crown. The body has a forward portion and a rearward portion. The club head includes a face positioned at the forward portion of the body. In some embodiments, the crown includes a lattice-like structure having thin regions surrounded by a web of relatively thicker regions. In some embodiments, the club head includes one or more stiffening tubes attached between the sole and the crown to improve the acoustic performance of the golf club head.

Disclosed herein is a golf club head comprising at least one crown opening and at least one crown insert attached to the body and covering the at least one crown opening. The golf club head further comprises at least one sole opening and at least one sole insert attached to the body and covering the at least one sole opening. The golf club head additionally includes at least one weight member configured to clamp first and second ledges at selected locations along a sliding weight track. The golf club head also comprise a coefficient of restitution (COR) feature located on the sole of the golf club head. The at least one crown insert is formed from a composite material having a density between 1 g/cc and 2 g/cc. The at least one sole insert is formed from a composite material having a density between 1 g/cc and 2 g/cc.

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.

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.