To do the job properly, you'll want to remove both cups.
A Park Tool HCW-4 has both the other tools you'll need, although there's not much leverage and it doesn't look particularly comfortable if you need to give it some welly.
Thank you so much for your reply.. especially highlighting the two brands. I knew about the Park tool option but hadn't seen the Tacx. Cheers for that.
To do the job properly, you'll want to remove both cups.
A Park Tool HCW-4 has both the other tools you'll need, although there's not much leverage and it doesn't look particularly comfortable if you need to give it some welly.
The separate Tacx tools are longer and have rubber handles: drive side, non-drive side.