You need lockring that has notches to tighten on the outside, usually the same interface as hollowtech 2 bottom brackets.
Is this what you mean? Sorry for the many questions
https://www.wiggle.co.uk/prime-1520mm-center-lock-lockring/
@snottyotter started
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You need lockring that has notches to tighten on the outside, usually the same interface as hollowtech 2 bottom brackets.