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