Summary

The front buttons which stop the wheels on my Pachislo machine were flaking out. I replaced them with the red 16mm Panel Mount Momentary Pushbutton from Adafruit and they worked perfectly. The only problem was that the Adafruit buttons didn't fit in the three holes on the front. So with these, you slot one through the front hole of the Pachislo, push the Adafruit button in this Front piece, then screw the rear piece into the back of the Adafruit button inside the Pachislo machine. Works great now.