For example, the internal diameter of the tubular body or cannula is normally in the range of 5 to 20 mm., or more, although {HEAD ~ other sizes} such as {TAIL ~ larger oval shapes} may be employed, if desired 
such as
For example , the internal diameter of the tubular body or cannula is normally in the range of 5 to 20 mm . , or more , although { HEAD ~ other sizes } such as { TAIL ~ larger oval shapes } may be employed , if desired
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 OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH