By automated and manual procedures, DSM tightening tools of the BL/BLH series take care of a reliable tightening operation. Low-friction mounted gearing stages and the maintenance-free brushless motor guarantee a maximum quiet running or the tightening tools. Different types from a torque between 0,5 Nm and 2000 Nm are available. A self-resilient torque and angle of rotation transducer additional increases the tightening safety. Torque and angle of rotation transducers assure a 100 % tightening connection by all types. By the own production are customised executions possible at any time.