Norbar 11123 Torque wrench, 1/4" ratchet, adjustable, 4-20 N.m/40-180 lbf.in; Model SL0 Plastic Knob. The SL0 Torque Wrench is the smallest wrench in our 'Slimline' range, with a range of 4 - 20 N.m (40 - 180 lbf.in) Production 'P' type versions are designed to discourage unauthorised alteration. The have no scale and so must be set against a torque testing device such as Norbar's Professional Torque Tester. Features: Accuracy exceeds all international standards Traceable calibration certificate supplied to satisfy ISO 9000 quality systems High quality 72 tooth ratchet allows use in confined spaces Torque Handle versions, both 16mm spigot and 9 x 12mm female Production 'P' Type versions designed to discourage unauthorised alteration Fixed head version has a push through square for left and right handed torque tightening Unmistakable signal when set torque is reached Comes with: Plastic storage case Calibration certificate Specification: Length: 220 mm Square Size: 1/4" Torque Radius: