This Plasmaglow Activator Momentary Switch is the perfect addition to your vehicle. Perfect for nitrous, horns, purge kits, push to start, and more! This switch has a 1 inch diameter. The Plasmaglow Activator Momentary Switch will mount almost completely flush with the mounting surface and take only the brush of a finger to activate. Give your vehicle a look of class and luxury, as well as that custom look with the Plasmaglow Activator Premium Switch. This switch is a momentary switch, meaning that you push and hold the button to activate it, just as you would push your horn to honk and it stops honking when you let go. Part numbers: "Blue 11020" "Red 11021" "White 11022" "Green 11025"