Feet/Coasters/Dampers for delta rostock mini g2s pro

These are vibration damping feet. My rostock delta mini g2s pro was making quite a lot of noise.

Goes well together with my stepper motor dampers: http://www.thingiverse.com/thing:1625391

Printed mine with soft PLA and 20% infill, but other soft filament will probably work as well. Apply some z-scaling to get the softness right if it isn't already.