This under-tile ramp for GraviTrax marble runs was built by the Surem2804 shop on Etsy. I received this part for free to review.
source

This under-tile ramp for GraviTrax marble runs was built by the Surem2804 shop on Etsy. I received this part for free to review.
source
Speed 0.25 is very nice π
π π
ASMR