However, in variations of the tip distal end surface 34, the annular surface may be positioned at {HEAD ~ an angle} to {TAIL ~ the normal plane} ranging between 30° and 5° 
to
However , in variations of the tip distal end surface 34 , the annular surface may be positioned at { HEAD ~ an angle } to { TAIL ~ the normal plane } ranging between 30 ° and 5 °
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 REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH