Within the interior of the tube, {HEAD ~ one end} of a flexible beam or {TAIL ~ wire} is inserted into the supporting material 
Within the interior of the tube , { HEAD ~ one end } of a flexible beam or { TAIL ~ wire } is inserted into the supporting material
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH