Hexagon screwdriver for internal hex screws. Hex-Plus provides larger contact surfaces in the screw head. This minimizes the notch effect, nearly eliminating the destruction of the screw head. The ideal handle shape allows for the transmission of high tightening and loosening torques. The ergonomic shape of the handle fits well in the palm of the hand, with fingers resting in the softly rounded grip recesses. The entire hand makes contact with the handle, thus avoiding friction losses between the hand and the handle.