Safe-Torque A 1 SHK Set 1, 1/4" square head, 2-12 Nm20 piece set; in surface friendly, compact and extremely robust textile box. Small size and low weight for better mobility. One Safe Torque A 1 torque wrench with 1 4" square head drive, measuring range 2 12 Nm; for controlled clockwise and counterclockwise torque operation; tightening and loosening with or without torque, disengageable torque function (Torque Lock function); 72 teeth; low return angle of 5; easy setting and saving of the required