Utilizing a heavy duty cam and pawl mechanism, this reversible 1/2" drive click stop torque wrench is the go-to tool when precise torque is needed. The click-stop torque wrench design provides a torque range from 20 to 150 ft. lbs and is accurate to within +/- 4% .Heavy duty cam and pawl mechanismTorque range: 20 to 150 ft. lbsReversibleWrench length: 18"Shipping Weight: 3.15 lbs.