Extremely powerful 2-speed impact drill for fast, versatile drilling with constant speed under load. Vario-Tacho-Constamatic (VTC)-Full Wave Electronics for work with materials requiring customised speeds, which remain constant under load. Thumbwheel for speed preselection. Selectable “Impuls” mode for removal of stubborn screws and for spot-drilling on smooth surfaces. Robust die cast aluminium gear housing for optimum heat dissipation and long service life. Rotating carbon brush bridge for maximum performance even in anti-clockwise operation, e.g. for the removal of stubborn screws. S-Automatic safety clutch: mechanical decoupling of the drive for safe working should the tool stop unexpectedly. Forward and reverse rotation. Spindle with hexagonal recess for screwdriver bits for working without chuck.