This 15 amp on-off switch is perfect for controlling ignition power, switching lights or any other simple power circuit. Contacts are made of solid, fine silver for highest reliability. Nickel plated actuator is 11/16 inch long. The mounting bushing diameter and bushing length are both 15/32 inch. Mounting hardware is furnished. Connection is by solder-lug terminals. We also offer a SPST Toggle Switch with Push-On Terminals (part #4416) for easier hookup.