an outer distal tip attached to said outer stationary tubular body, said outer tip having {TAIL ~ a proximal end}, a distal end and an opening at said distal end in its side and end wall, said opening having a first cutting edge around {HEAD ~ its periphery} 
an outer distal tip attached to said outer stationary tubular body , said outer tip having { TAIL ~ a proximal end } , a distal end and an opening at said distal end in its side and end wall , said opening having a first cutting edge around { HEAD ~ its periphery }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL 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 OTH HEAD HEAD HEAD HEAD HEAD HEAD