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 slight release of tension Range: 10-80Nm/88.5-708lb-in Overall length 280mm Calibration certificate included Supplied in blow mould storage case Display packed This is a Draper product.