This support element is an improved version of the stock support element which comes with Brodit part 216177 (As second number on my support element 216176 is printed on the label).
Most likely this is useful for the iphone 13/14/15 pro max models or any other large phone.

This solves a few tiny but important problems:

• longer part now supports the back of the magsafe holder, when the support element is fully extended (which was the case on my iphone 113 pro max and 15 pro max.
• "cable management" added
• thickened the lower part of the support element - so the phones back is supported on the whole lower part of the holder
• support (where the phone actually resides on) extended by 1mm

Hint:
While replacing the stock part, you may want to replace the headed screw which holds/camps the magsafe, with a grub screw (without head).
On my holder, the head had a too big diameter and pushed the iphone back by a few 0.x millimeters. I.e. the phone sat on the head and not flat on the magsafe