The ornamental design for a drillguide handle, as shown and described.
FIG. 1 is a perspective view of a drill guide handle shown in an environment illustrating our new design;
FIG. 2 is a rear end elevation view of the drill guide handle shown removed from its environment in order to show aspects of the design that are not apparent in the perspective view;
FIG. 3 is a front end elevation view thereof;
FIG. 4 is a left side elevation view thereof;
FIG. 5 is a right side elevation view thereof;
FIG. 6 is a top plan view thereof; and,
FIG. 7 is a bottom plan view thereof.
The broken lines shown that are immediately adjacent the shaded areas represent unclaimed boundaries while all other broken lines are directed to environment and are for illustrative purposes only; the broken lines form no part of the claimed design.