12A - 26T Outer Diam 165mm. 12A 2/3"Double Row Sprocket 12-26 Teeth Industrial Sprocket Outer Diam 80-165mm. 12A - 12T Outer Diam 80mm. 12A - 13T Outer Diam 86mm. 12A - 14T Outer Diam 93mm. 12A - 15T Outer Diam 99mm.
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