This tile is a remix of one posted by https://www.thingiverse.com/mangapatty/designs . Its much under appreciated design that I had included in one of my marble tracks. I'll add the video of it it later. I remixed the tile to match the look and feel of my Gravitrax Tunnels design, which seems to have been very popular with this community.

The print profile includes the original model and my remix. My remix uses a different/better ring.

Here's a short video of the tile in action→