An IBA Core is a type of B-Daman core that was balanced on its stats. It was first used as a base for a B-Daman. The user could add parts to it and safely remove it. These were sold in boxes complete with B-Daman parts, and sometimes some other thing with it. The pieces needed to be assembled first, before it could be used. Then, some Zero 2 cores were released and sold. Now, the cores could be high in power, control, or others without doing anything else. In the Battle B-Daman TV series, the first season used IBA cores, while the second season used Zero 2 cores.
References
IBA Core Wikipedia(Text) CC BY-SA