2020 adjustable Feet

UPDATE:
- adjusted the parameters and added 3030 ones, but i can not test if it fits
- you will have to use 30mm floor protectors or just print the 20mm feet


My 2020 aluminum profiles are without a thread.
So instead of bying a screw tap, i designed these feet with a locked in nut.

for one feet:
1x M4 x 16mm hex socket screw
1x M4 nut
1x M4 x 12mm washer
2x M5 x 8mm screw
2x M5 hammer nut
1x Stick-on floor protector 20mm (like IKEA "FIXA")