piercing {TAIL ~ at least two transversely spaced apertures} in an elongated sheet of heat conducting, {HEAD ~ deformable material} 
piercing { TAIL ~ at least two transversely spaced apertures } in an elongated sheet of heat conducting , { HEAD ~ deformable material }
OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD