Switch parts and accessories are used to manufacture or repair switches. Switches are devices that block or allow the flow of electric current. There are many types of switch parts and accessories. Examples include a switch membrane; parts for a toggle switch, rocker switch, or keylock switch; push buttons; and a lever handle. A switch membrane is an alphanumeric or graphical covering used with keypads to indicate the name or function of each key. A toggle switch is used to make and break a circuit by toggling the position of the switch. Toggle switches can use a standard toggle handle, a long toggle handle, a short toggle handle, or a ball handle. A rocker switch opens and closes the circuit with the release of an actuator. Push buttons are mechanical switches that consist of a plunger that is pushed down to close and open the switch. There are two types of push buttons: momentary contact and maintained contact. Keylock switches are activated by a key that is turned in a circle, and which can stop in several positions within its range. Lever handle switches have a variety of actuator and termination options. Lever handle switch accessories include screws, stand-offs, and nuts.