Reduced hosel exit bore size for IFIT system for golf clubs

1 . A golf club having a removable shaft, the golf club comprising:

a shaft having a butt end and a tip end;

a hosel assembly connected to the tip end of the shaft, the hosel assembly comprising a screw, at least one washer and a shaft sleeve having a threaded bore; and

a golf club head having a sole wall, the sole wall having a hosel exit bore, the hosel exit bore having an upper section and a lower section, the upper section having a width greater than the lower section;

wherein the upper section is configured for transverse placement of a washer in the hosel exit bore;

wherein the screw threadingly engages the threaded bore through the at least one washer and the hosel exit bore;

wherein a width of the upper section ranges from 0.49 inch to 0.55 inch, and a width of the lower section ranges from 0.37 inch to 0.55 inch;

wherein a length of the upper section ranges from 0.15 inch to 0.25 inch;

wherein a first internal wall of the sole wall defines the upper section of the hosel exit bore and has an inward angle;

wherein a second internal wall of the sole wall defines the lower section of the hosel exit bore and forms an undercut portion below the first section of the sole wall;

wherein the second internal wall has an inward angle, the second internal wall is at an obtuse angle relative to the first internal wall and the second internal wall is at an acute angle to a third internal wall, and the third internal wall has a depth greater than a depth of the first internal wall.

2 . The golf club according to claim 1 wherein the hosel exit bore defines a volume less than 0.12 cubic inch.

3 . The golf club according to claim 1 wherein the hosel exit bore has a length ranging from 0.5 inch to 1.0 inch.

4 . The golf club according to claim 1 wherein the upper section of the hosel exit bore has a depth ranging from 0.25 inch to 0.5 inch.