Individually tested to 10 000 volts chrome vanadium steel bar allows for high torque and reduces the chance of tip breakage soft grip handle perfect combination of great grip plus reduces fatigue colour coded ends for easy identification of the right screwdriver for each screw type smooth domed end for fast spinning action speed and comfort large diameter handle offers greater torque needed for driving wood screws handle moulded direct to bar virtually unbreakable bond highly reliable a