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