Cannondale Hollowgram Bottom Bracket

[McKracken]

Hello,

<waves>

I bought a secondhand CAAD6 Saeco last year and the bottom bracket needs to be replaced. I know nothing! Could really do with a point in the right direction for what to order and from where? Tried my local bike shop and the chap said he didn't know.

It's got Hollowgram written on the crank and this article below suggests it might be 'an integrated BB30 with Cannondale Hollowgram SI crankset':

https://circularcycling.nl/upcycle-023/

It measures 109mm.

Added pictures to this folder here:

https://imgur.com/a/SN7B8UQ

Would like to order the parts and take them to the guy in the shop to fit, so any help at all would be amazing.

Thanks

[Valbrona]

Just a regular BB30 bottom bracket shell ...