Those are longer and smoother slopes, that you can use to level your map layout by +/- 1 without being pissed by an unwanted jump. Hope you'll find them usefull ^^
This is a reupload with additional stuff (plastic, roads, placement clip, platforms with grass/snow/sand on sides).
Credit to Rxelux for his set PlatformExtension1pt2 (https://item.mania.exchange/set/view/10445), which i used as basis for my custom items, thank u dude ^^
Also credit to iNDEX for his awesome set OpenPlastic (https://item.exchange/set/view/10956), which i also extended with the plastic slopes :D