Abstract: A hosel interface device for interconnection of the golf club shaft and the golf clubhead, the device having a portion which is made intentionally bendable to provide any desired extent of variation in lie angle and face angle in virtually an infinite number of increments. The invention employs a bending region along a portion of an otherwise straight exterior hosel interface or coupling. The hosel interface is configured to be inserted into the typical hosel area location of a golf club head such as a wood or iron head. The hosel interface also provides an elongated receptacle for receiving the clubhead end of a shaft. The bending region is between the clubhead insertion region and the shaft receptacle region of the hosel interface.

Abstract: A device for altering the angle between the shaft and the head of a golf club. The preferred embodiment of the invention utilizes a plurality of inserts which are configured to be inserted into a tapered hole in the golf club head for receiving a shaft or a hosel for mating with the shaft. Each such insert is designed to provide a different angle between head and shaft so that the golfer merely selects one of the plurality of inserts which will be best for his or her hitting accuracy. The inserts are positioned in the club head in such a way as to create a swaging of the insert into the club head and the insert onto the shaft tip. Swaging is the interference fit of two components with two or more surfaces that are forced together in a locking condition, for instance a tapered pin into a tapered hole. A swaging screw is utilized to drive the insert into a tapered swage condition with the club head and thus squeeze onto the shaft to ensure a strong bond without utilizing an adhesive.