The apparatus is designed so that under some conditions the braid is readily pushed back from {TAIL ~ the end} of {HEAD ~ the heater} upon insertion 
The apparatus is designed so that under some conditions the braid is readily pushed back from { TAIL ~ the end } of { HEAD ~ the heater } upon insertion
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH