Holds an iphone 5 or 4 with a slim case to the vents in a Renault Scenic 3. It doesn't hold the iphone 5 tight because the iphone 4 is thicker. But it still holds it well enough. There is a little hook to attach the cord when no phone is plugged (but it could be tighter). There is also a sound amplifier for the iphone 5 to listen to music when it isn't plugged in the car audio system.Print all parts without support. Then you have to glue the part 2 and part 3 together.