Check the listing for details. DaierTek Horn Button 12V Marine Horn Button 16MM Momentary Push Button Switch. Condition: New. Listed at 12.39 USD. BRAND NEWHorn Button Switch: Horn button 12v, black shell blue speaker LED illuminated, SPDT 1 NO 1 NC design, which performances as push and hold to honk, and release to stop honking.Rating & Mounting Hole Size: Rating: 5A, 12V boat horn switch. The mounting hole size for this boat horn button is 16mm.Wiring Harness: The wire socket that come with this momentary push button switch is clasp design, which not only makes the connection between wire socket and switch stable, but also makes the socket become easier to remove from the air horn button.Waterproof: This stainless steel horn switch is marine horn button design, which makes it for both automotive and marine use, suitable for car, boat, etc.What you get: 2 x Boat horn button, 2 x wiring harness, 1 x wiring diagram, 1 Year Warranty, 24H Fast Respond Customer Service.THANK YOU