Draper 3 8 square drive 10 80nm or 88 5 708in lb ratchet torque wrench draper 54627 reversible ratchet head the nm and lb in scales are engraved 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 sold loose draper 54627 3 8 square drive 10 80nm or 88 5 708in lb ratchet torque wrench