Screwdrivers Torque Screwdriver Specialty Torque Tip Size 1/4 In. Overall Length 5-1/2 In. Includes 1/4 in Dr. Female Hex Adapter ESD Safe No Insulated No Nonsparking No Handle Design Knurled Adjustable Drive Size 1/4 In. Calibration Certificate Included Yes Torque Measurement Type Inch-Ounce Primary Scale Range 20.00 to 100.00 in.-oz. Primary Scale Increments 1.00 in.-oz. CW Rotation Accuracy +/- 6.0 Percent of Torque Reading @ 20 Percent to 100 Percent Of Full Scale