Do you have a bb? What threading is it? Does it fit? If so that's the threading. If not, it's probably the other.
(Unless it's a Raleigh or Carlton which have their own stupid threading)
@Khornight2 started
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Do you have a bb? What threading is it? Does it fit? If so that's the threading. If not, it's probably the other.
(Unless it's a Raleigh or Carlton which have their own stupid threading)