Universal fits for cars, e-bike, motorcycle, etc.Non-locking momentary action push to make connection.Easy setup. All you need is a 12mm hole and the switch will sit in nicely.Ideal for controlling car horn, and easy to operate the momentary switch.Automatic reset, energize when press it, and automatically pops and off when put off.Can be applied as the switches for the additional electronic equipment inside outside the car.Package included: 20 x car push button switch