Chuck for power tools

FIG. 1 is a front plan view of the chuck for power tools, which is the object of the present design;

FIG. 2 is a back plan view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a left plan view thereof;

FIG. 6 is a right plan view thereof; and,

FIG. 7 is a perspective view of the chuck of power tools in condition of use showing the chuck attached to a drill or hammer drill, it being understood that the broken line showing of environmental structure is for illustrative purposes only and forms no part of the claimed design.