{HEAD ~ A drive shaft vibration dampener} having {TAIL ~ an outer cylindrical housing} which attaches to the end of the drive shaft 
having
{ HEAD ~ A drive shaft vibration dampener } having { TAIL ~ an outer cylindrical housing } which attaches to the end of the drive shaft
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH