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Countersink bit
01
沉头钻头, 锥形钻头
a specialized drill bit with a tapered end used to create a conical recess at the top of a drilled hole, allowing screws or fasteners to sit flush with or below the surface of the material
Example
To ensure the screw sits flat against the surface, I used a countersink bit before driving it in.
For a clean look, always use a countersink bit when attaching trim or molding.
