As my name suggests, they fit Stadia Controllers. They are made of pleasantly soft rubber. I got them because I've been using control freaks for years, but the Stadia controller's joystick is just a hair smaller than the PS4's, but not as small as the Xbox's (I've got them all, including a PC with a GeForce 1070 ). So the control freaks worked. on the Stadia Controller, but they moved and rotated easily, so it was annoying. Anyway, I got them, installing them on a Stadia controller was a bit…