Wera Kraftform 7445/46/47 Torque Screwdriver 2.5-55.0 in-lbs and Bit Set 27-Piece 1 x 7445 Adjustable Torque screwdriver with Rapidaptor, range 2.5-11.5 in-lbs 1 x 7446 Adjustable Torque Screwdriver with Rapidaptor, range 11.0-29.0 in-lbs 1 x 7447 Adjustable Torque Pistol Grip Screwdriver with Rapidaptor, range 25.0-55.0 in-lbs Hex Bits: 2.0, 2.5, 3.0, 4.0, 5.0, 6.0 Torx Torsion Bits: T6, T7, T8, T9, T10, T15, T20, T25, T30 Torx Plus Bits: IP6, IP7, IP8, IP9, IP10, IP15, IP20, IP25, IP30 Durable storage case with molded insert Wera Kraftform 26 Piece Adjustable Torque Screwdriver set is designed for torque controlled tightening to guarantee the safety of the screw connection. Torque can easily be set to the required scale value by hand without special tools. Measurement accuracy is +/- 6% in accordance with standard EN ISO 6789. Wera torque tools have unlimited loosening torque to loosen seized screws. All Wera hand tools feature the trademarked ergonomic Kraftform handle, with hard and soft zones, that fits the shape to the hand for the ultimate in comfort and high-speed torque transfer. Adjustable torque screwdrivers feature the Rapidaptor bitholder with quick-release chuck that allows for speedy one-handed bit insertion and removal for insert and power bits. Calibration certificate included. Simple torque adjustment without special tools Rapidaptor with quick-release allows for quick one-handed bit exchange both insert and power bits Limited Lifetime Warranty, German Engineered