Did these come from a single-player cab? I've seen these metal DE sticks before, and have a couple myself, but didn't know they were used on KC, as they're different that the ones found on the player-vs-player cabs (which are a plastic leaf-based stick, which was made by Coin Controls.)
Just interested to know more about them, for historical/reference/restoration purposes, as I'm not sure if the bolt patterns are the same for the single-player and PvP KC cabs. They are pretty sturdily built sticks though.