Insulated Adjustable TorqueVario-S w/ Window Scale 5 - 17 In-lbs Torque Adjustment Tool included. Also requires the SlimLine 28350 Blade Holder for operation (sold separately) Handle size proportioned to optimize torque range Audible and perceptible click when torque setting has been attained +/-6% accuracy Overall length / OAL: 126 mm (5.0") The manufacturer changed this model from 7.5 - 20 in-lbs to 5 - 17 in-lbs in May 2017