Our plastic clips are now also available in different colors: blue, red, yellow & turquoise! You can create different design elements by attaching the colored clips to the front of the modules. Our plastic clips connect the individual shelf modules to one another, which is super easy to do (no tools needed!). The thick, flexible material of the plastic clamp is what holds the Cubes firmly together. To give you an idea, we recommend using two clips per cube. When attaching the cubes to plates on wheels, we recommend clips at the front and back to make sure it stays stable.