NOS just opened, push button for siren or starter.heavy duty, made though the WWII years to 1953, made for the Pennyan boat company NY. THIS ONE DATED 1953 ON PACKAGE. used for sirens or starters, this button is a ''push in and hold to connect power, and to stop, release the button'' another word...push to use, leave go it stops... they work great as picture shows. a pipe space behind dash can project length you want it to stick out. the one pictured on the dash, my friend went another step and used a washed stamped with siren. your buying the button only as shown and the packaging and tags. questions?