? About Mogstation hammers

[Carin-Eri]

I was looking at the Hammers & I don't know what it means when it sais yes on protectable & extractable, is that referring to something Glam related?

Was thinking about getting these but would like to know what it means concerning projectable & extractable.

Projectable = can project the image of another weapon over its appearance (with Glamor prism) and vice-versa
Extractable = can extract materia melded to it if you so desire