| 摘要 |
A wire spool for winding therearound a tying wire has a cylindrical wire winding body. A pair of flanges are integrally formed on both axial ends of the wire winding body. One of the flanges has formed on an outer periphery thereof a pair of notches in close proximity to each other. Between those sides which form one of the notches, that side which lies closer to the other of the notches is formed so as to expand an opening of said one of the notches. Between those sides which form the other of the notches, that side which lies farther from said one of the notches is provided with an overhung portion so as to narrow an opening of the other of the notches.
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