The chuck is mounted within {HEAD ~ a carrier} having {TAIL ~ a bore} for a shaft portion of the chuck 
having
The chuck is mounted within { HEAD ~ a carrier } having { TAIL ~ a bore } for a shaft portion of the chuck
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH