20 ABSTRACT OF THE DISCLOSURE SPOOL SHAFT SUPPORT STRUCTURE FOR DUAL-BEARING REEL THE SPOOL SHAFT COMPRISES A SHAFT PORTION, TWO ANNULAR FIRST ANNULAR PORTIONS ARRANGED 5 ON OPPOSITE ENDS OF THE SHAFL PORTION, AND AN ANNULAR SECOND LARGER DIAMETER PORTION ARRANGED ON THE END OF THE SHAFT PORTION POSITIONED REMOTE FROM A CENTER OF THE SPOOL. EACH OF THE FIRST ANNULAR PORTIONS AND THE SECOND LARGER DIAMETER PORTION HAVE AN OUTER DIAMETER THAT IS LARGER THAN THE OUTER DIAMETER OF THE SHAFI PORTION. THE SECOND LARGER DIAMETER PORTION IS ARRANGED ON AN OUTWARD SIDE OF THE FIRST ANNULAR PORTION IN THE AXIAL DIRECTION SO AS TO CREATE A SPACE THEREIN I 0 BETWEEN THE FIRST ANNULAR PORTION AND SECOND LARGER DIAMETER PORTION.