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