Thanks. Apologies for not making myself clear. I understand the difference between direct bearing mount, BB 30, and cup mount, Press Fit 30, but I see the term Push Fit 30 also being used and wondered if Push Fit/Press Fit were one and the same, 46mm shell with cups. BB 30 is the standard introduced supposedly by Cannondale and uses no cups, but a 42mm shell and circlips.