Flexible Light Channeling Tube, EverBrite pen/work light

EverBrite Multi-Functional Rechargeable Work Light, Flexible LED Flashlight with 3 Light Modes (White, Red, UV), Telescoping Magnetic Pickup Tool.

It’s on Amazon but I don’t want to link to it directly. The above text is the exact title.
The light seems meh but what caught my eye was the flexible gooseneck design and it appears to channel or tunnel the light from the pen through the tube to the magnet end of the flex shaft.

Has anyone tried this thing? Does the light tube fit on any other lights you own? I am really curious how well or not the tube works. Thanks!

Screenshot from Amazon