The ornamental design for a driver of a wrench, as shown and described.
FIG. 1 is a perspective view of the driver;
FIG. 2 is a front view of FIG. 1;
FIG. 3 is a rear view of FIG. 1;
FIG. 4 is a left side view of FIG. 1;
FIG. 5 is a right side view of FIG. 1;
FIG. 6 is a top view of FIG. 1;
FIG. 7 is a bottom view of FIG. 1; and,
FIG. 8 is a drawing illustrating that the driver is disposed in a head of a wrench.
The dash-dash broken lines in FIG. 1-7 are for the purpose of illustrating portions of the driver of a wrench that form no part of the claimed design. The short dash-dash broken lines in FIG. 8 are for the purpose of illustrating portions of the driver of a wrench that form no part of the claimed design. The dash-dash broken lines in FIG. 8 illustrate the environment of the claimed design and forms no part thereof.