Fully ball and roller bearing-mounted for long lifetime and precise working, Drill chuck secured by centering screw against coming loose in reverse rotation, Synchronized 2-speed draw key transmission: Switch over possible during operation, Noise/vibration information, Measured values determined according to EN 60745, Total vibration values (vector sum of three directions), Reverse rotation,2 Speed gearbox for demanding work. Metal quick-change chuck for high precision and long lifetime, Control electronic for exact pilot drilling, Spindle collar diameter of 43 mm (European standard)can be used in drill stands, Drilling in metal Vibration emission value ah: 7.5 m/s, Uncertainty K: 2.4 m/s.