Torque screwdrivers series Kraftform 7400 with adjustable torque value without any special tools. Precision of measuremnt of ± 6% DIN EN ISO 6789 with excess load signal distinct audible and perceptible when the torque set value is reached. Model with rapidaptor technology with 1/4" hexagonal drive DIN ISO 1173-C 6.3 - E 6,3.