THIS IS A AUTHENTIC DELTA HORN UNIT THAT WAS USED ON MANY OLDER VINTAGE BIKES. THIS ITEM USED ON MOST BRANDS OF BIKES IN THE 30S, 40S, 50S...THIS ITEM FITS AND WAS USED IN THE HORN TANK, THIS IS THE BUZZER PART / HORN. THIS ITEM IS IN NEVER USED. PRICED TO SELL.