Two nozzle parts 13, 14 made of {HEAD ~ insulating material} are displaceably guided transverse to {TAIL ~ the axis} of the housing 1 in the groove 11, provided in the insulating material element 8 
Two nozzle parts 13 , 14 made of { HEAD ~ insulating material } are displaceably guided transverse to { TAIL ~ the axis } of the housing 1 in the groove 11 , provided in the insulating material element 8
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH