Oh, carbon nanotubes, okay. I do actually know about those, even if I typically only had access to carbon fiber materials. Though I hadn't heard of an application with any biological engineering before.

[As for the UG, well, the sound of those does not come near her areas of experience. She has nothing to do with weapons development beyond the scope of bot fighting.]

If I knew more about the compositions of shells I might be able to hazard a guess. Might be hard to measure given its size.