This is a small keyring holder that will fit into the Steelcase brand Cubicle slatwall. It is modeled loosely off their discontinued part, with several minor changes to make it a stronger print. You will need to print this with support. it should just socket in and latch though once its off the bed and trimmed.
Push plastics ABS
as close to solid as you can get it if you have heavy keys
Pictures eventually likely.