CR-10 Low profile squash/racket ball feet

I´ve printed few of those squash ball feet for my printer, but they all are too high to use with some of the designed enclosures that rely on the original CR-10 feet.

I designed low profile feet to be used with every enclosure that uses those original feet. These are ment to used with normal squash ball (40mm diameter) and they attach to inner corners of printer.

There are 2 models, one for M4 nut and one for M5. I had to do this as I thought I have M4s. I didn´t so I designed M5 version