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Your cart is empty.TAP GUIDES INSURE THAT THREADS ARE SQUARE TO SURFACE. The lower portion of the tap guide should remain as square as possible to the engine surface. Turn the tap slowly while making sure the guide remains flush. Tap Guide 3/8-16
mglotustvr
Reviewed in the United States on December 17, 2016
Limited success.
Grant Tiller
Reviewed in the United States on July 17, 2015
The base isn't really wide enough for this to work as designed
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