I have seen a few varieties of stepped ferule so it might just be a case of trying different ones until you get one that holds the cable in place and gives you a nice line.
Nust a regular gear cable bit, the one in the photo seems a bit wide maybe from a brake cable?
@ArthurDent started
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I have seen a few varieties of stepped ferule so it might just be a case of trying different ones until you get one that holds the cable in place and gives you a nice line.