Robust gear housing made of die-cast aluminium for optimum heat dissipation and long service life Vario-Tacho-Constamatic (VTC) full-wave electronics for working with speeds adapted to the material, which remain constant under load Two-speed transmission Metabo Marathon motor with patented dust protection for a long service life Metabo S-automatic safety clutch, mechanical release of the drive when the drill jams for safe working Right and left-hand thread Drill spindle with hexagonal socket for screw bits for working without a drill chuck Overload protection, protects the motor from overheating Restart protection, prevents accidental starting of the machine after power interruption Handle with anti-slip soft-grip surface Cable protection ball socket for optimum freedom of movement during work Carbon brush wear indicator