Sl0 fixed head torque wrench 3 8in drive 4 20nm norbar 11123, the norbar sl0 fixed head torque wrench is accurate to plusmn3% and features a high quality 72 tooth ratchet, for use in confined spaces'. '.strtoupper('f')itted with a push through square for left and right handed torque tightening'. '.strtoupper('i')t's easy to set the torque, an unmistakable signal is given off when the set torque is reached'. '.strtoupper('t')he moulded grip aids correct hand location and operator comfort'. '.strtoupper('a')ccuracy meets all international standards'. '.strtoupper('a') traceable calibration certificate is supplied to satisfy iso 90002000 quality systems.this norbar sl0 fixed head torque wrench has the following specification drive 1 4in squarerange 4 20nm 40 180 lbf.intorque radius 144mmratchet teeth 72ratchet type reversiblelength 220mmweight 0.4kg norbar 11123 sl0 fixed head torque wrench 1 4in drive 4 20nm