Manufactured from nickel chrome plated alloy, 1/2" square drive, with reversible ratchet head. The Nm scale and Ft/lb  is engraved on the barrel of the wrench. The micrometer type sleeve allows accurate preset torque levels to be set. When torque is reached the wrench produces an audible click and a release of tension. *This torque wrench is accurate to +4% of the test load as noted on the supplied certificate of calibration and has been manufactured and tested in accordance with equipment in accordance with 150 0789-1:2017. Accuracy outside the stated minimum and maximum test load is not guaranteed.