Standard Pack = 1 piece(s). Adjustable TorqueVario Handle with Direct Reading Scale. 5-10 In/lbs range. .5 In/lbs increments. Ergonomic multi-component handle, light and compact. Handle Sizes proportioned to optimize torque range. Audible & perceptible click when torque setting has been attained. With certificate of calibration. +/- 6% Accuracy. (Includes Adjustment Tool)