Adjustable length shaft and an adjustable mass for a golf club

A golf club comprising:

• a first shaft coupled to a club head;
• a second shaft configured to slidably engage a portion of the first shaft;
• a grip coupled to the second shaft;
• and
• an adjustable length shaft assembly at least partially positioned within the second shaft and configured to permit a portion of the first shaft to slide in relation to the second shaft, the adjustable length shaft assembly comprising:
• an insert coupled to an axial end face of the first shaft, the insert comprising a threaded aperture and a tubular portion devoid of threads;
• a threaded screw configured to threadably engage with the threaded aperture of the insert, the threaded screw configured to rotate, wherein in response to rotation of the threaded screw, the insert and the first shaft are fixed relative to each other and travel along the threaded screw to allow the first shaft to slide in relation to the second shaft to adjust a length of the golf club;
• and
• an alignment member positioned near an end of the second shaft and configured to improve a concentricity of the first shaft within the second shaft;
• wherein the threaded screw is received by a retainer, the retainer configured to remain static with respect to the second shaft and allows for a rotation of the threaded screw;
• wherein the insert is positioned away from the retainer in an expanded configuration, and the insert abuts the retainer in a fully contracted configuration;
• wherein at least one of an outer surface of the insert or an outer surface of the retainer comprise a plurality of nodal protrusions;
• and
• wherein the grip is restricted from rotation about the first shaft or the second shaft as the first shaft slides in relation to the second shaft.