Jmods which They are better know for specialises in games consoles modifications but in particular Xbox 360 and xbox one. They first started modifying controllers as a hobby in 2008, after doing a few controllers  they started selling parts To modify controllers and create guides for others to follow and create their own custom controllers. A couple of years down the line they started to creating one off custom controllers to order until recently when they released a series of controllers (but still with customisable features).

They Offer two different services when buying a Jmods product,  either DIY parts or Custom One off controllers.

With DIY parts, the parts they sell are the parts they use everyday so anything you see on a custom controller can be bought to be fitted yourself not only that they have a website dedicated to showing you how to fit this parts.

The second is custom controllers, generally speaking each controller they create is a one off and there won't be another one like it which is prefect to have something unquestionably and different from everyone else.