{HEAD ~ The sleeve extension} 151 has {TAIL ~ an external diameter D3} as measured to exterior surface 153 which is different from the external diameter D1 of primary inner shell 30′ and different from the internal diameter D2 of the secondary inner shell 40 
has
{ HEAD ~ The sleeve extension } 151 has { TAIL ~ an external diameter D3 } as measured to exterior surface 153 which is different from the external diameter D1 of primary inner shell 30′ and different from the internal diameter D2 of the secondary inner shell 40
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH