The CDI Micro-Adjustable Torque wrench is calibrated with a torque range of 20 to 150 in-lbs. it has an ergonomic handle for comfortable use and an easy to read laser-marked scale. The torque setting locks in place with a lock ring on the handle. When the torque setting is reached an impulse can be felt through the handle and an audible click is heard. This wrench features a standard, reversible one fourths inch square drive and comes in a sturdy storage case. Mfg: Brownells