a 7 piece safe torque speed bicycle wera 7515 7 tool setA 7 piece tool set. For professional screwdriving work and professional precision adjustment, as well as for screwdriving work with dynamometric control. A very safe, over slip dynamometric mechanism with quick adjustment for right and left tightening and five selectable tightening torques (2. 0; 3. 0; 4. 0; 5. 0; 6 . 0 Nm), as well as a fixed position (Torque Lock) for unlimited tightening and untightening torques. A quick change bit holder allows