Ergonomic handle dial and positive lock mechanism simplify selecting and keeping desired torque levels. Thin, narrow head makes it easier to get at hard-to-reach nuts and bolts. High-grade, super-strong steel alloy helps ensure ultra-durable, long-lasting performance. C-Series wrenches are designed for normal industrial torque applications, particularly manufacturing and heavy-equipment maintenance. Calibrated to +/-3% clockwise, +/-6% counterclockwise. Tool Type: Torque-Wrench Drive; Head Type: 1/2" Drive.