This model was made specifically for this kit: https://www.elegoo.com/products/elegoo-uno-most-complete-starter-kit. But it can be used for any Arduino Uno and 160mm Breadboard. 3xM3 bolts and 3xM3 nuts is needed to fasten the Uno to the model. 3 spacer rings should be placed between the Uno and the bottom and aligned with the holes.