K1 cranks, changing bolt sizes?

Anyone know how to take off the built in crank puller on K1 street cranks? The earlier model, not the latest cranks.

The hub I want to attach these cranks to is small, so I wanan change the bolt size so it will fit. I have to pairs of these cranks, both with diffrent size bolts, so there must be a way to change them.

Nvm… got it sorted thanks to Kevin but now I can see my cranks are too damaged, it can’t be taken out. Gah…