MCRMTR TRQ WRENCH, 120 TO 600 FT.-LB.,3/4

It lets you dial in a specific torque value between 120 and 600 foot-pounds, and the wrench clicks or releases slightly when you reach that setting to prevent over-tightening. This type of tool is commonly used in heavy-duty truck and trailer repair for jobs like installing wheel lug nuts, suspension U-bolts, and cylinder head bolts where precise clamping force is critical. It features a 48-1/2 inch long alloy steel body with a ratcheting head, and you replace or recalibrate these wrenches when they fall out of their rated accuracy, which is ±4% clockwise and ±6% counter-clockwise at 20 to 100% of the full scale.