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;
• 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 fixed to the first shaft, the insert comprising a threaded aperture;
• and
• an adjustment member comprising a threaded screw configured to threadably engage with the threaded aperture of the insert, the adjustment member configured to rotate, wherein in response to rotation of the adjustment member, the insert prevents independent movement between the insert and the first shaft while the insert travels along the adjustment member to allow the first shaft to slide in relation to the second shaft to adjust the length of the 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;
• 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 fixed to the first shaft, the insert comprising a threaded aperture;
• and
• an adjustment member comprising a threaded screw configured to threadably engage with the threaded aperture of the insert, the adjustment member configured to rotate, wherein in response to rotation of the adjustment member, the insert and the first shaft are fixed relative to each other and travel along the adjustment member to allow the first shaft to slide in relation to the second shaft to adjust the length of the golf club.