TorqueControl Slotted & Phillips Blade Set, 8 Piece. Includes: Slotted 2.5, 3.0, 3.5, 4.0mm, Phillips #0, #1 & TorqueVario-S handle 5-18 In/lbs. Blade on a narrow 5/32" Hex shaft. High alloy CVM steel, hardened, satin hard chrome finish. Ergonomic multi-component handle, light and compact. Handle sizes proportioned to optimize torque range. Audible & perceptible click when torque setting has been attained. Includes certificate of calibration. In durable canvas pouch.