90° Countersink
with drill bit

A convenient power tool accessory. Allows you to drill a hole and simultaneously
countersink the hole for screws.

A
common use is to allow the head of a countersunk bolt or screw, when placed in
the hole, to sit flush with or below the surface of the surrounding material.

This accessory will just allow you to drill and countersink in a singel step.
Accurate at all times and a very neat job.

A countersink is a conical
hole cut into a manufactured object.