Chrome Vanadium & Chrome Molybdenum construction. Flip reverse ratchet head function (Single Directional Torqueing) Sliding Lock for torque settings. Fitted with the TOPTUL Thermo Plastic anti-slip comfort grip handle. Overall Length 385mm.**** Always wind the torque setting back to ZERO on the scale after use to avoid stretching the torque setting spring, which can result in false torque settings. Supplied calibrated in a blow moulded protective storage case. Calibration certifacte valid to 1 year.