Due to the use of {HEAD ~ multi edged indexable inserts} 30 and 31 which cut a full circumference of {TAIL ~ bore} 11 across virtually its full diameter during each one half revolution of the drill, the drill may be fed axially at a rapid rate 
Due to the use of { HEAD ~ multi edged indexable inserts } 30 and 31 which cut a full circumference of { TAIL ~ bore } 11 across virtually its full diameter during each one half revolution of the drill , the drill may be fed axially at a rapid rate
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH