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