It is possible to thread the rod directly into {HEAD ~ the head} of {TAIL ~ the plug} rather than using the mandrel 
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It is possible to thread the rod directly into { HEAD ~ the head } of { TAIL ~ the plug } rather than using the mandrel
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH