The spinning operative of {TAIL ~ the elongate body} allows {HEAD ~ the reamer} to remove an additional amount of the material from the hole, so as to enlarge the hole to a desired size 
The spinning operative of { TAIL ~ the elongate body } allows { HEAD ~ the reamer } to remove an additional amount of the material from the hole , so as to enlarge the hole to a desired size
OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH