A spool has a bobbin, and first and second flange portions that are formed on both ends of the bobbin and have diameters larger than that of the bobbin. A drag mechanism that brakes the spool and includes a drag operation member and first and second member that are arranged on the handle side of the spool. The first brake member is attached to the second flange portion. The second brake member is arranged axially movably and opposite the first brake member. The second flange portion has a large diameter portion and a small diameter portion. The large diameter portion has a diameter larger than that of the first brake member. The small diameter portion is formed between the bobbin and the large diameter portion and has a diameter smaller than that of the first brake member.