Wera Safe-Torque A2 2-12 Nm 1/4" Drive Torque Wrench 23 Piece SetWERA TOOLS SAFE TORQUE A2 2 12Nm 1 4" DRIVE TORQUE WRENCH 23 PIECE SET 23 piece set; in surface friendly, compact and extremely robust textile box. Small size and low weight for better mobility. 1 Safe Torque A 2 torque wrench with 1 4" hexagonal 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;