BRIO - Super Supports (33254)
If you are looking to raise the leverl of your tracks, these stackable supports are the most sturdy. Built in Anti slip strips hold the tracks in place.
Can build on top on one another. (2 supports per pack - Approx 6 cm high)
Unless your track is coming from that height, eg a bridge, you may need ascending track (sold separately) to get up to that height. If sold out in Brio, Thomas wooden ascending track is also useful.