These buttons are of poor quality and difficult to press. I used them to create arcade games in a museum setting. The design is basically a machine screw that holds the red plunger and the head of the screw touches the two pins to close the switch. As a result, you'll have to wiggle the button a bit to get the screw head to touch the two contact points at the same time to complete the circuit. Also, since the piston is held primarily by the machine screw, it's possible to unscrew the piston…