LTC Series Features:The LTC-Series is superb for use on the assembly line AND in field maintenance kits! The +/- 4% Accuracy meets or exceeds ASME B107.14M and ISO 6789, and provides the quality your customers demand! The pin lock assures positive head connection, yet permits head changeover in seconds! Bi-directional versatility obtained by simply removing head, turning wrench over, and replacing head. Extremely versatile system permits use of fewer wrenches by connecting to over 100 standard interchangeable heads, plus extensions, adapters, and your own custom heads! Excellent audible and tactile impulse when set torque achieved. Unique Dovetail design transmits the load at right angle from the wrench to the head exceptional strength and rigidity of connection. Light weight new comfort grip provides superior ergonomics, reducing operator fatigue.