As described above, the longitudinal axis of the glass core 20 is substantially centered with respect to {HEAD ~ the exterior surface} 54 on {TAIL ~ the second sleeve} 50 
on
As described above , the longitudinal axis of the glass core 20 is substantially centered with respect to { HEAD ~ the exterior surface } 54 on { TAIL ~ the second sleeve } 50
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH