You are buying one or a set of controllers depending on your choice, as pictured.

These 52V/25A controllers for Viper Venom will also work with our Firefly model and other electric scooters but please keep in mind that it's your responsibility to make sure that they will work with your scooter, before buying them.

Controller's case dimensions are: 12x7x4cm.

Feel free to contact before purchasing them for any questions or conserns you might have or if you would like to get more pictures of it.
There are no instructions with it so if you don't have the knowledge on how to fit them, we strongly suggest that you seek professional help.​​​​​​​​​​​​​​​​​​​​
All wires and plugs of the controllers are pictured.