A spool brake mechanism 25 is a device for braking a spool. The spool brake mechanism 25 includes a spool brake member 40 and a control component 55. The control component 55 is configured to control a spool brake member with first braking force. The control component 55 is also configured to control the spool brake member with second braking force when tension detected by a tension detection member becomes equal to or less than a reference tension.