These hold the 30 pin ribbon cable that runs up the left vertical securely in place and hopefully prevent the cable getting jostled loose and burning out before its time.

The main brackets are attached to the extrusion slots via t-nuts and 10mm long M5 screws. (that is what I had on hand) You can probably sub a smaller diameter if needed.

The clamps use M2 screws and nuts. 10mm long is ideal, but can go a bit longer. Though you will want to watch how long you go on the right screw on the top clamp as that could hit the roller if too long.

Everything prints without supports. - look at my "print orientation" stls for best orientation.

Be aware that the clamp parts need to matched with their respective brackets. The top one is chamfered on one end to make sure it has plenty of clearance.