From the Super Mario Wiki, the Mario encyclopedia
RemoCon Kanaami are fences appearing in New Super Mario Bros. Wii. They first appear to be grey, but turn on once the player grabs onto them. While controlling it, the player can use their Wii Remote to rotate the fence in a 180-degree arc, which largely depends on its axis of rotation. Only two appear in the entire game, both of which are found in individual secret rooms in World 2-.
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