High quality bit for TORX® screw sockets. Torx Plus profile: Compared to the "normal" TORX® profile, the six sides responsible for transmitting torque between the tool and the screw are enlarged in a non-circular but elliptical profile. The force applied during screwing is thus distributed over larger surfaces. Higher torques are transmitted and the durability of the screws and tool is further enhanced. Extra hard. Hexagonal 1/4 inch, suitable for bit holder according to DIN ISO 1173-D 6.3.