Driving head

A driving head having a driving section for holding and driving a screw-type object, comprising:

• a body having a connection portion and a driving portion which extends integrally from a first end of the connection portion, the connection portion having a polygonal recess defined in a second end thereof, an outer diameter of the driving portion being smaller than an outer diameter of the connection portion, the driving portion having a driving section formed on a distal end thereof, the driving section having multiple engaging faces defined in an outer periphery thereof, the engaging faces located at equal center angle to each other, a neck connected between the connection portion and the driving portion, the neck being a recessed and curved neck, a center of a curvature of the neck located at outside of the body, the driving portion being a tapered portion, a first angle defined between an outer surface of the driving portion and an axis of the body, an outer diameter of the driving section being smaller than the outer diameter of the driving portion, and
• an object having a reception recess in which the driving section is inserted, the reception recess having a tapered angle, the first angle being smaller than or equal to the tapered angle, a distal end of the driving section reaching an inner end of the reception recess when the driving section is inserted into the reception recess.