Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:2473152.

Feet I designed to the ROTORACER RR210 frame.

http://shop.rotoracer.eu/rotoracer-rr210

Re-check the correct lenght for the screws. I used screws with 2mm more with these feet. I printed them in PETG or TPU (best).