Right Angle Drill Accessory

right angle
the 90 degree angle between two perpendicular lines
In geometry and trigonometry, a right angle is an angle that bisects the angle formed by two halves of a straight line. More precisely, if a ray is placed so that its endpoint is on a line and the adjacent angles are equal, then they are right angles.
An angle of 90°, as in a corner of a square or at the intersection of two perpendicular straight lines
An angle of 90 degrees; the bisect of the angle formed by a single straight line

accessory
A thing that can be added to something else in order to make it more useful, versatile, or attractive
Someone who gives assistance to the perpetrator of a crime, without directly committing it, sometimes without being present
accessary: aiding and abetting in a crime; "he was charged with being accessory to the crime"
a supplementary component that improves capability
clothing that is worn or carried, but not part of your main clothing
A small article or item of clothing carried or worn to complement a garment or outfit

drill
a tool with a sharp point and cutting edges for making holes in hard materials (usually rotating rapidly or by repeated blows)
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