Nut and Bolt Thread Checker (Complete SAE/Inch and Metric Set)
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<b>[Product Information]</b><br>
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<li>23 of the most common SAE and 21 of the most common metric sizes, see description</li>
<li>Each included size has a nut and bolt checker on the same gauge.</li>
<li>Thread sizes are permanently stamped on each gauge.</li>
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