PROBLEM TO BE SOLVED: To provide a spool of a spinning reel, in which a sounding mechanism can easily be attached or detached.SOLUTION: The engaging member 20a of a circular attaching member 20 to which the striking member 92 of the sounding mechanism 90 is attached is elastically engaged with a portion 19a to be engaged of an attachment dent portion 19, and the attaching member 20 to which the sounding mechanism 90 is disposed can be attached or detached to the attachment dent portion 19 without using a conventional tool such as a screw driver. Thereby, the sounding mechanism 90 can easily be attached or detached.COPYRIGHT: (C)2008,JPO&INPIT【課題】スピニングリールのスプールにおいて、発音機構の着脱を容易に行えるようにする。【解決手段】発音機構90の打撃部材92が取り付けられる取付部材20の係止部20aを取付凹部19の被係止部19aに弾性係止することによって、従来のようにドライバー等の工具を使用することなく発音機構90が設けられた取付部材20を取付凹部19に対して着脱できるので、発音機構90の着脱を容易に行うことができる。【選択図】図10