Countersink Drill Set

countersink
Drive (a screw, nail, or bolt) into such a hole
set: insert (a nail or screw below the surface, as into a countersink)
Enlarge and bevel the rim of (a drilled hole) so that a screw, nail, or bolt can be inserted flush with the surface
a hole (usually in wood) with the top part enlarged so that a screw or bolt will fit into it and lie below the surface
counterbore: a bit for enlarging the upper part of a hole

drill
bore: make a hole, especially with a pointed power or hand tool; "don't drill here, there's a gas pipe"; "drill a hole into the wall"; "drill for oil"; "carpenter bees are boring holes into the wall"
similar to the mandrill but smaller and less brightly colored
a tool with a sharp point and cutting edges for making holes in hard materials (usually rotating rapidly or by repeated blows)

set
fit(p): (usually followed by `to' or `for') on the point of or strongly disposed; "in no fit state to continue"; "fit to drop"; "laughing fit to burst"; "she was fit to scream"; "primed for a fight"; "we are set to go at any time"
A collection of implements, containers, or other objects customarily used together for a specific purpose
a group of things of the same kind that belong together and are so used; "a set of books"; "a set of golf clubs"; "a set of teeth"
put: put into a certain place or abstract location; "Put your things here"; "Set the tray down"; "Set the dogs on the scent of the missing children"; "Place emphasis on a certain point"
A group or collection of things that belong together, resemble one another, or are usually found together
A group of people with common interests or occupations or of similar social status