{HEAD ~ The header} can have {TAIL ~ a thickness} substantially less than the probe diameter and can comprise a flange about an edge of the header 
{ HEAD ~ The header } can have { TAIL ~ a thickness } substantially less than the probe diameter and can comprise a flange about an edge of the header
HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH