Beer tent furniture clip (for tubes)

We occasionally use our beertent tables and benches indoors so we had to apply some protection for our floor. Since the legs and feet are not from flat steel but tubes the already available feet would not fit under our furniture.
I designed this thing in OpenSCAD so you can customize it for your custom dimensions.
When selecting width and length for the floor-surface, remember each foot has to carry roughly one adult.
The STL has a floor surface of 25x50mm to cover two felt pads of 20x20 and a tube diameter of 25mm. With the current opening settings it snaps perfect in place with an infill setting of 50%.