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Factory accuracy: ± 2%.
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Reliability of mechanism: 50,000 cycles (wrenches --> 200 N.m).
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Use possible with accessories attachment 20 x 7 mm.
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One-way wrenches usable for unscrewing by reversing the bits.
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Numbered wrenches supplied with ISO 6789 calibration certificate.
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Wrenches supplied in plastic protection tube.