ISO 6789/IEC 61340-5-1 - ESD-safe IEC 61340-5-1 and EN 100015-1 - suitable for bits with 1/4'' external hex drive C 6.3 and E6.3 - Slip clutch, ensuring that the fastener is not damaged even if the tool continues to turn - Permanently lubricated internal mechanism - Torque measurement only in a clockwise direction; can be used to loosen fasteners without affecting the internal mechanism - Easy-to-read window scale - Lockable adjustment ring that snaps securely into place after adjustment - Non-magnetic, 1/4" hex bit holder with spring to prevent damage - All-metal handle - Measurement range: 0.9–4.5 Nm - Length: 171 mm - 1 torque screwdriver without bit