Abstract: A spool for fishing reels for permitting full use of the fishing line wound thereon and eliminates the increased drag and resistance normally resulting when casting after the amount of line on the reel is reduced to low levels. The spool has an inner flange and an outer flange separated by a hub upon which fishing line may be wound, the outer flange being formed from two plate members one of which is substantially larger than the other and removably attached thereto when the amount of line on the reel is more than a predetermined amount. The smaller plate member is permanently attached to the hub of the spool and the inner surface of the smaller plate forms a continuous with the removable plate member when the latter is attached thereto. The fixed plate member and the removable plate member have interlocking cooperating surfaces and a single reel lock may selectively attach the spool to a reel mounting shaft in either configuration.