Thing type 551, Red Spring, is a red spring pointing straight up. Compared to the blue spring and yellow spring, it has a high amount of force behind it, being stronger than both the blue spring and yellow spring. The red spring propels the player 1080 fracunits into the air. To make platforms reachable by a red spring, it is recommended to make them no higher than 1024 fracunits from the ground to provide a little extra room.