3 piece door lock button kit.
Extremely common issue with the interior lock button on Defenders is the outer trim pings off.....so people buy new ones but it's the detent on the bracket that fits to the door that bends out and/or cracks which causes this trim to pop off every time the button lifts.
So....this little kit is ideal to repair each button properly.....once the door card is off, remove the two screws holding the button assembly to the door and unhook from the lock rod and swap for the new one.