AUTOMATIC SAFETY CLUTCH.USER BENEFITS:Robust die cast aluminium gear housing for optimum heat dissipation and durability.Rotating carbon brush bridge for maximum performance even in anti-clockwise operation.Vario (V)-Electronics for working at customised speeds to suit various application materials.Metabo S-automatic safety clutch: mechanical decoupling of the drive for safe working should the drill stop unexpectedlySpindle with hexagonal recess for screwdriver bits for working without chuck.Suitable for powerful drilling of larger diameters and for stirring thick, liquid-like materials.