Manufactured from nickel chrome plated alloy, 1/4" square drive, with reversible ratchet head. The in/lb and Nm scale 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.