The apparatus includes a tube holding mechanism, a rotating cutting tool and {HEAD ~ a device} for driving {TAIL ~ the cutting tool} 
for driving
The apparatus includes a tube holding mechanism , a rotating cutting tool and { HEAD ~ a device } for driving { TAIL ~ the cutting tool }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL