The Beta torque screwdrivers, are also called dynamometric screwdrivers, are divided into two main types: the first is the pre-calibrated model, ie without adjustments, necessarily pre calibrated with torque meter not included. The second model 583, however, has the control system. Both models of torque screwdrivers Beta are certified according to UNI EN 26789 ISO 6789 and the attack is 1/4 ". Very popular in the field of model professional in precision and calibration of high precision instruments. Thanks to their practical inserts 1/4 "you can use these types of screwdrivers in all work areas requiring a special impression (Torx, Phillips, Pozidriv, Supadriv, Spanner, Tri-Wing, etc.).