Ratchet head is engraved with Nm and lb - in scales on the barrel of the wrench. The micrometer type sleeve allows accurate preset torque values to be set. When torque is reached the wrench produces an Audible click and a release of tension. Marked range: 30 - 210Nm/22.1 - 154.9lb - ft. Overall length 475mm. Clockwise right - hand thread torque application only. Supplied in blow mould storage case.