Makes more sense, it doesn't look like a campy pattern and I'm not aware of them needing spacers. 1mm is for 10 speed cassettes on 8/9(10/11) speed HG freehubs, there's a thicker 1.85mm one to fit other cassettes onto an 11s road freehub
@snottyotter started
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Makes more sense, it doesn't look like a campy pattern and I'm not aware of them needing spacers. 1mm is for 10 speed cassettes on 8/9(10/11) speed HG freehubs, there's a thicker 1.85mm one to fit other cassettes onto an 11s road freehub