Screwdriver bit

FIG. 1 is a front-right-top perspective view of a screwdriver bit, showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof, the right side view being a mirror image thereof;

FIG. 5 is a top plan view thereof;

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

FIG. 7 is a perspective view of the screwdriver bit, wherein the broken line showing of the screwdriver is for illustrative purposes only and forms no part of the claimed design.