You mean these:
Main main problem with that one is that the spider arms end over the cutouts, as in the set-up below
1 Attachment
Hillary Stone: Shimano 3/32" 19£
Or Gebhardt:
problem with that one is that the spider arms end over the cutouts
File them off; if you don't use a front derailleur, then the spider extensions aren't doing anything useful.
@Sig_Arlecchino started
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You mean these:
Main main problem with that one is that the spider arms end over the cutouts, as in the set-up below
1 Attachment