The Monitor Feet Extenders gives an additional 104mm height to the monitor, and are designed for the Samsung S49A950 49" Ultrawide curvet monitor.
This is specially useful for when you don't want to curl up in your chair while working at your desk. This allows for a more stance between the desktop height (height of your hands) and the height of the monitor (where your eyes see).
The front-feet at attached with two zip ties each, and the back with double-sided tape.