Gedore Torque Quickset, with micrometer setting, effective for clockwise and anticlockwise tightening, trigger mechanism prevents any overtightening, non-fatiguing operation thanks to short trigger distance, setting ring fixes selected values, rotary ball-shaped coupling for use in series production; precise, compact design. Female hex drive for bits 1/4" C6.3 + E6.3.Accuracy ±6% according to DIN EN ISO 6789, with factory test certificate.