Depth gauge and drill bit

A kit comprising:

• a drill bit including a rear shank portion defining a longitudinal axis and having a retention feature configured to non-rotatably retain the shank portion in a tool holder of a rotary power tool, a front cutting portion extending along the longitudinal axis and comprising at least one helical cutting flute, and an intermediate portion extending along the longitudinal axis and connecting the shank to the cutting portion, the intermediate portion including a longitudinal slot extending parallel to the longitudinal axis and disposed axially frontward of the retention feature,
• a depth gauge having a body configured to receive the intermediate portion of the drill bit, a retention mechanism coupled to the body and having an inward projection to removably couple the body to the longitudinal slot, and a cap coupled to the body such that the cap contacts a workpiece surface to prevent the drill bit from entering the workpiece more than a predetermined depth,
• wherein the longitudinal slot is configured to receive the at least one inwardly directed projection of the depth gauge for attaching the depth gauge to the drill bit, and the longitudinal slot has an axial length greater than an axial length of the projection to enable axial movement between the depth gauge and the drill bit when the inward projection is received in the longitudinal slot.

The kit of claim B1, wherein the retention feature comprises one of:

• (a) a plurality of splines that together form a spline-type connection for coupling the shank to a corresponding spline-type connection in a tool holder of the rotary power tool;
• and (b) a plurality of slots that together form an SDS-type connection for coupling the shank to a corresponding SDS-type connection in a tool holder of the rotary power tool.