The lower shield plate 16 is made thicker than {HEAD ~ the upper shield plate} 15 for providing {TAIL ~ strength} 
The lower shield plate 16 is made thicker than { HEAD ~ the upper shield plate } 15 for providing { TAIL ~ strength }
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL TAIL TAIL TAIL TAIL TAIL