Instrument shank with square drive

FIG. 1 is a top perspective view of an embodiment of the claimed design;

FIG. 2 is a bottom perspective view of the claimed design of FIG. 1 ;

FIG. 3 is a front elevation view of the claimed design of FIG. 1 ;

FIG. 4 is a rear elevation view of the claimed design of FIG. 1 ;

FIG. 5 is a right side view of the claimed design of FIG. 1 ;

FIG. 6 is a left side view of the claimed design of FIG. 1 ;

FIG. 7 is a top view of the claimed design of FIG. 1 ; and,

FIG. 8 is a bottom view of the claimed design of FIG. 1 .

The ornamental design which is claimed is shown in solid lines in the drawings. The dash-dash broken lines in the drawings illustrate portions of the instrument shank with square drive which form no part of the claimed design. The dot-dash broken lines represent the bounds of the claim and form no part of the claimed design. Oblique lines show a transparent, reflective, or shiny surface, and not surface ornamentation.