The ornamental design for a golf club shaft having structural taper and integral insert-adapter with extension shaft-sleeve therefor, as shown and described.
FIG. 1 is perspective view of a golf club shaft having structural taper and integral insert-adapter with extension shaft-sleeve therefor showing my new design;
FIG. 2 is a top end view thereof;
FIG. 3 is a bottom end view thereof; and,
FIG. 4 is a exploded view of the FIG. 1 in a condition prior to assembly/use.
The rear view of FIGS. 1 and 4 are mirror images thereof.