Yeh they do, they have a screw on bash akin to the old base/ddg/onza/beetle cranks
A shed?
yup, ffw = front freewheel.
I don;t think you can fit a bash to the try-all cranks to be honest. Adam , correct me if I'm wrong but aren' they standard on the old djinn and yaabaa 649 bikes? Meant for bikes with a bashplate as they offer no chainring protection themselves.
Which onza cranks? the pro cranks? If so they're pretty good...seem solid and a reasonable weight, look fairly similar if not identical to the meta tcs cranks.