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